Case study ddt in an aquatic food chain answers
DDT increases or biomagnifies if we look at a food chain. DDT is fat-soluble, meaning animals store it in fatty tissues. It also takes a relatively long amount of time to break down. Thus, if a predator consumes multiple organisms and each organism has a small amount of DDT, the amount of DDT in the predator is going to be the result of all of those small amounts combined. In the image below, we see that the concentration of DDT in large fish is 2ppm parts per million but the fish-eating bird has a concentration of 25ppm.
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History and Impact of the Pesticide DDT
DDT in Aquatic Food Chain. by Breana Oliver
The highest DDT concentration in aquatic food chain shall occur in. Biomagnification refers to increase in concentration of the toxicant at successive trophic levels. This happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level. Dont't have an account? Register Now. Tech College Predictor View All. Computer Application and IT Change.
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The DDT Story
DDT was one of the first chemicals in widespread use as a pesticide. Following World War II, it was promoted as a wonder-chemical, the simple solution to pest problems large and small. Today, nearly 40 years after DDT was banned in the U.
Asked by Wiki User. The concentration of DDT in an animal increases as it moves up the food chain. It comes to the point where it can destroy the predators such as peregrine falcons by targeting the reproductive stage. Soft egg shells with peregrine falcons is one such example of the harm DDT has on food chains: soft egg shells make it harder for the chick to survive, and thus the chick dies inside the egg. This, ultimately, almost lead to the extinction of an entire species, and thus completely disrupted the food chain.
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