{"id":317,"date":"2026-05-27T11:14:34","date_gmt":"2026-05-27T11:14:34","guid":{"rendered":"https:\/\/routledgelearning.com\/sustainabilityprinciplesandpractice\/?page_id=317"},"modified":"2026-05-27T11:14:35","modified_gmt":"2026-05-27T11:14:35","slug":"pollution","status":"publish","type":"page","link":"https:\/\/routledgelearning.com\/sustainabilityprinciplesandpractice\/pollution\/","title":{"rendered":"Pollution"},"content":{"rendered":"\n<div class=\"wp-block-buttons is-content-justification-left is-layout-flex wp-container-core-buttons-is-layout-69934ac2 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-base-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/routledgelearning.com\/sustainabilityprinciplesandpractice\/flashcards\/\" style=\"background-color:#409750;font-style:normal;font-weight:300\">Back to all Flashcards<\/a><\/div>\n<\/div>\n\n\n\n<!-- Swiper -->\n<div class=\"swiper mySwiper\">\n    <div class=\"swiper-wrapper\">\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>acid rain<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Precipitation containing higher than normal amounts of sulfuric acid and nitric acid, formed when natural rainwater combines with sulfur dioxide and nitrogen oxides emitted by burning of fossil fuels.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>aerobic<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Living systems or processes that occur in the presence of oxygen.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>aerosol<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Minute solid or liquid airborne particles that remain suspended in the atmosphere for at least several hours.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>allergen<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A substance that activates the body\u2019s immune system, causing a response when a response is not necessary.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>anaerobic<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Living systems or processes that occur in the absence of oxygen.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>bioaccumulation<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The process in which the concentration of a substance taken in by an organism increases faster than the rate at which the organism can remove it.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>bioaugmentation <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The addition of microorganisms to a polluted site to assist in bioremediation.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>biochemical oxygen demand (BOD)<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A measure of organic content in water, given by the amount of dissolved oxygen consumed by aquatic organisms as they break down organic matter.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>biomagnification<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The process in which the concentration of a substance increases as it passes to successively higher trophic levels of a food web.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>bioremediation<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The use of microorganisms to break down pollutants in soil or water.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>brownfield<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>An abandoned or under-used industrial site in which redevelopment or reuse is complicated by the presence or potential presence of a hazardous material.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>cancer cluster<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A greater-than-expected number of cancer cases in a particular location, usually associated with exposures to toxins in the workplace.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>carcinogen<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A substance known to increase the risk of developing cancer.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>conventional pollutants  <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Major water pollutants regulated by the U.S. Clean Water Act: biochemical oxygen demand, total suspended solids, fecal coliform bacteria, pH, and oil and grease.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>criteria pollutants<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Major air pollutants regulated by the U.S. Clean Air Act: particulates, carbon monoxide, sulfur oxides, nitrogen oxides, lead, and ground-level ozone.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>endocrine disruptor<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A pollutant that interferes with normal hormone functions.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>eutrophication<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Accelerated plant growth and decay in aquatic environments caused by nitrogen and phosphorus pollution and resulting in oxygen depletion.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>fate<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The description of how a pollutant changes over time.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>fecal coliform bacteria<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A group of bacteria found in the feces of humans and other animals which are used as indicators of disease-causing bacteria.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>greenfield <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Open space that has never been built upon.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>hazardous air pollutants (HAPs)<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A list of chemicals identified by the EPA which are considered particularly dangerous.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>hyperaccumulator  <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A plant which can accumulate larger amounts of micronutrients than most other plants.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>microplastic<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Particles of synthetic plastic which are smaller than a few millimeters.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>mutagen<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A substance which damages genetic material, or DNA, in cells.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>mycoremediation<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The use of fungi to break down contaminants.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>nanoplastic<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Particles of synthetic plastic which are smaller than a few micrometers.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>neurotoxin  <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A toxin that damages the nervous system.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>nonpoint source<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A diffuse source of pollutants that cannot be tied to a specific point of origin.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>off-gassing<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The emission of volatile organic compounds from synthetic and natural products.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>particulate material<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Matter in the form of fine solid particles or liquid droplets small enough to be suspended in air or water.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>persistence<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The property of a substance which lasts a long time without changing.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>persistent organic pollutant <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A class of organic chemicals that remain unchanged for long periods of time, accumulate in the food chain, and are toxic to humans and other animals.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>pesticide<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A synthetic substance designed to kill unwanted organisms; categories of pesticides include insecticides, rodenticides, herbicides, and fungicides.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>pH<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A scale which indicates the degree of acidity or alkalinity, based on a measure of the concentration of hydrogen ions in water.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>phytoremediation <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The use of plants to treat pollutants.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>point source<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A source of pollution that comes from a single, identifiable source.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>pollution<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The accumulation of substances with adverse effects on the health of living organisms.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>ppb<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Parts per billion; the number of parts of a chemical found in one billion parts of a particular gas, liquid, or solid mixture.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>ppm<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Parts per million; the number of parts of a chemical found in one million parts of a particular gas, liquid, or solid mixture.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>radioactivity  <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The emission of atomic particles as atomic nuclei decay.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>remediation<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The process of cleaning up a polluted site using physical, chemical or biological means.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>smog<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Air pollution formed by the interaction of pollutants and sunlight.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>teratogen<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A substance which causes abnormalities in developing embryos.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>thermal pollution <\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>An unhealthy change in water temperature.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>total suspended solids<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>Fine particles suspended in water, too small to be removed by settling.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>toxicant<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A substance that is harmful to living organisms. <\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>toxin<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A toxicant produced by a living organism.<\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>transport<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>The ways in which a pollutant moves through the environment. <\/p>\n<\/div>\n            <\/div>\n          <\/button>\n        <\/div>\n\n        \n        <!-- Swiper Slide -->\n        <div class=\"swiper-slide\">\n          <!-- Flashcard -->\n           <button class=\"flip-card\" role=\"button\" tabindex=\"0\">\n            <div class=\"flip-card-inner\">\n              <div class=\"flip-card-front\"><p><p>turbidity<\/p>\n<\/p><\/div>\n              <div class=\"flip-card-back\"><p>A measure of water clarity resulting from suspended particles 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