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TA SK #2: Please refer to the diagram (Figure on the right as well as the text above. Task A: DTT was once used as a potent insecticide until its harmful effects had been discovered. It is not banned. Like methyl mercury, it bioaccumulates in organisms up the food chain. The process of DTT bioaccumulation is shown in Figure 4. In your own words describe the process of bioaccumulation of DTT. Refer to your knowledge of ecology, food chains and food webs as well as feeding level (i.e trophic level). In your description use terms you have learned such as: food chain/web, producer/consumer, etc. Task B: In view of what you have learned about bioaccumulation, state why it may be healthier in some circumstance to consume vegetables and why you should decrease the amount of animals consumed from the top of the food chain.

TA SK #2: Please refer to the diagram (Figure on the right as well as the text above. Task A: DTT was once used as a potent insecticide until its harmful effects had been discovered. It is not banned. Like methyl mercury, it bioaccumulates in organisms up the food chain. The process of DTT bioaccumulation is shown in Figure 4. In your own words describe the process of bioaccumulation of DTT. Refer to your knowledge of ecology, food chains and food webs as well as feeding level (i.e trophic level). In your description use terms you have learned such as: food chain/web, producer/consumer, etc. Task B: In view of what you have learned about bioaccumulation, state why it may be healthier in some circumstance to consume vegetables and why you should decrease the amount of animals consumed from the top of the food chain.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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TASK #2: Please refer to the diagram (Figure on the right as well as the text Magnification of DDT Concentration Fish-Eating Birds 4) 10,000,000 above. Task A: DTT was once used as a potent insecticide until its harmful effects had been discovered. It is not banned. Like methyl mercury, it bioaccumulates in organisms up the food chain. The process of DTT bioaccumulation is shown in Figure 4. In your own words describe the process of bioaccumulation of DTT. Refer to your knowledge of ecology, food chains and food webs as well as feeding level (i.e trophic level). In your description use terms you have learned such as: food chain/web, Large Eish 1,000,000 Small Fish 100,000 10,000 Zooplankton Producers 1000 producer/consumer, etc. Task B: In view of what you have learned about bioaccumulation, state why it may be healthier in some circumstance to consume vegetables and why you should decrease the amount of animals consumed from the top of the food chain. Water Figure 4. Bioaccumulation (biomagnifica- tion) of DTT up the food chain. Place your answer to the Task #2 prompts in the table below..
Transcribed Image Text:TASK #2: Please refer to the diagram (Figure on the right as well as the text Magnification of DDT Concentration Fish-Eating Birds 4) 10,000,000 above. Task A: DTT was once used as a potent insecticide until its harmful effects had been discovered. It is not banned. Like methyl mercury, it bioaccumulates in organisms up the food chain. The process of DTT bioaccumulation is shown in Figure 4. In your own words describe the process of bioaccumulation of DTT. Refer to your knowledge of ecology, food chains and food webs as well as feeding level (i.e trophic level). In your description use terms you have learned such as: food chain/web, Large Eish 1,000,000 Small Fish 100,000 10,000 Zooplankton Producers 1000 producer/consumer, etc. Task B: In view of what you have learned about bioaccumulation, state why it may be healthier in some circumstance to consume vegetables and why you should decrease the amount of animals consumed from the top of the food chain. Water Figure 4. Bioaccumulation (biomagnifica- tion) of DTT up the food chain. Place your answer to the Task #2 prompts in the table below..
Mercury Pollution On the one hand, you hear fish is good for you. On the other hand, you hear that you're not supposed to eat too much of some types of fish, like tuna. How can something that's supposed to be good for you also be harmful to your health? Mercury Mine Volcano Coal plant FOOD CHAIN Mercury is released into the atmosphere when coal is burned (Figure 3). But breathing the mercury is not harmful. In the atmosphere, the mercury forms small droplets that are deposited into water or sediments. Shark Pike Albacore Trout Tuna (can) Krill Halibut Salmon Pollock Oyster Do you know why you are supposed to eat large predatory fish like tuna infrequently? It is because of the accumulation of mercury in those species. Some pollutants remain in an organism throughout its life, a phenomenon called bioaccumulation since it occurs in living organisms. In this process, an organism accumulates the entire amount of a toxic com- Mercury level (EPA advice for consumption) Eat only a few times per month times per week Eat a few Unlimited Figure 3. Methyl mercury bioaccu- poulates up the food chain. pound that it consumes over its lifetime. Not all substances bioaccumulate. Can you name one that does not? Aspirin does not bioaccumulate; if it did, a person would quickly accumulate a toxic amount in his/her body. Compounds that bioaccumulate are usually stored in the organism's fat. In the sediments, bacteria convert the droplets to the hazardous compound methyl mercury. Bacteria and plankton store all of the mercury from all of the seawater they ingest (Figure 3). A small fish that eats bacteria and plankton accumulates all of the mercury from all of the tiny creatures it eats over its lifetime. A big fish accumulates all of the mercury from all of the small fish it eats over its lifetime. For a tuna at the top of the food chain, that's a lot of mercury. Methyl mercury poisoning can cause nervous system or brain damage, especially in infants and children. Children may experience brain damage or developmental delays. The phrase "mad as a hatter" was common when Lewis Carroll wrote his Alice in Wonderland stories. It was based on symptoms suffered by hatters who were exposed to mercury and experienced mercury poisoning while using the metal to make hats. These symptoms include impairment of peripheral vision, sensory disturbances, coordination problems, speech impairment, and muscle weakness. Symptoms associated with elemental mercury poisoning can include tremors, muscle atrophy, twitching, insomnia, and emotional changes.
Transcribed Image Text:Mercury Pollution On the one hand, you hear fish is good for you. On the other hand, you hear that you're not supposed to eat too much of some types of fish, like tuna. How can something that's supposed to be good for you also be harmful to your health? Mercury Mine Volcano Coal plant FOOD CHAIN Mercury is released into the atmosphere when coal is burned (Figure 3). But breathing the mercury is not harmful. In the atmosphere, the mercury forms small droplets that are deposited into water or sediments. Shark Pike Albacore Trout Tuna (can) Krill Halibut Salmon Pollock Oyster Do you know why you are supposed to eat large predatory fish like tuna infrequently? It is because of the accumulation of mercury in those species. Some pollutants remain in an organism throughout its life, a phenomenon called bioaccumulation since it occurs in living organisms. In this process, an organism accumulates the entire amount of a toxic com- Mercury level (EPA advice for consumption) Eat only a few times per month times per week Eat a few Unlimited Figure 3. Methyl mercury bioaccu- poulates up the food chain. pound that it consumes over its lifetime. Not all substances bioaccumulate. Can you name one that does not? Aspirin does not bioaccumulate; if it did, a person would quickly accumulate a toxic amount in his/her body. Compounds that bioaccumulate are usually stored in the organism's fat. In the sediments, bacteria convert the droplets to the hazardous compound methyl mercury. Bacteria and plankton store all of the mercury from all of the seawater they ingest (Figure 3). A small fish that eats bacteria and plankton accumulates all of the mercury from all of the tiny creatures it eats over its lifetime. A big fish accumulates all of the mercury from all of the small fish it eats over its lifetime. For a tuna at the top of the food chain, that's a lot of mercury. Methyl mercury poisoning can cause nervous system or brain damage, especially in infants and children. Children may experience brain damage or developmental delays. The phrase "mad as a hatter" was common when Lewis Carroll wrote his Alice in Wonderland stories. It was based on symptoms suffered by hatters who were exposed to mercury and experienced mercury poisoning while using the metal to make hats. These symptoms include impairment of peripheral vision, sensory disturbances, coordination problems, speech impairment, and muscle weakness. Symptoms associated with elemental mercury poisoning can include tremors, muscle atrophy, twitching, insomnia, and emotional changes.
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