WebApr 9, 2024 · DDT affects the calcium metabolism of birds and results in the thinning of eggshells. During the 1940s and 1950s, DDT was extensively used to decrease the mosquito population and this led to a rapid decline in the bird population. Another prominent biological magnification example is the presence of mercury in various predatory fishes. WebBy the time it reaches the top carnivore, the pollutant will have accumulated to such an extent that it becomes toxic, causing reduced fertility or even death. DDT DDT is a …
Polluting the food chain - Ecosystems - BBC Bitesize
WebWhy does DDT get concentrated as it moves up the food chain? The concentration effect occurs because DDT is metabolized and excreted much more slowly than the nutrients … WebJun 13, 2024 · When an animal consumes food having DDT residue, the DDT accumulates in the tissue of the animal by a process called bioaccumulation. The higher an animal is on the food chain (e.g. tertiary consumer such as seals), the greater the concentration of DDT in their body as a result of a process called biomagnification. egg birthed fanfiction
How DDT works and why it is toxic to insects but not mammals
Webthe environment, moving up the food chain from the smallest life forms into predatory fish. It then gets into humans when they eat fish containing mercury. How does DDT & mercury exposure affect health? DDT — The most sensitive health effect associated with DDT exposure is liver damage. Additional health WebFarmers used DDT on a variety of food crops in the United States and worldwide. DDT was also used in buildings for pest control. What is DDT made of? Technical DDT is made by condensing chloral hydrate with chlorobenzene in concentrated sulfuric acid (Metcalf 1995). It was first synthesized in 1874, but it was not until 1939 that Müller and ... WebHow long does it take DDT to break down in the environment? DDT lasts a very long time in soil. Half the DDT in soil will break down in 2–15 years. Some DDT will evaporate from soil and surface water into the air, and some is broken down by sunlight or by microscopic plants or animals in soil or surface water. eggbert the slightly cracked egg pdf