Question

Explain the concept of Biomagnifaction ...pls didn't copy from copy... ​

Answer 1

Biomagnification, also known as bioamplification or biological magnification, is any concentration of a toxin, such as pesticides, in the tissues of tolerant organisms at successively higher levels in a food chain.[1] This increase can occur as a result of:

•    Persistence – where the substance cannot be broken down by environmental processes
•    Food chain energetics – where the substance's concentration increases progressively as it moves up a food chain
•    Low or non-existent rate of internal degradation or excretion of the substance – mainly due to water-insolubility

Biomagnification is the build up of toxins in a food chain. The DDT concentration is in parts per million. As the trophic level increases in a food chain, the amount of toxic build up increases. The x's represent the amount of toxic build up accumulating as the trophic level increases. Toxins build up in organism's fat and tissue. Predators accumulate higher toxins than prey.

Biological magnification often refers to the process whereby certain substances such as pesticides or heavy metals work their way into lakes, rivers and the ocean, and then move up the food chain in progressively greater concentrations as they are incorporated into the diet of aquatic organisms such as zooplankton, which in turn are eaten perhaps by fish, which then may be eaten by bigger fish, large birds, animals, or humans. The substances become increasingly concentrated in tissues or internal organs as they move up the chain. Bioaccumulants are substances that increase in concentration in living organisms as they take in contaminated air, water, or food because the substances are very slowly metabolized or excreted.

Answer 2

Answer:

It is the phenomenonof progressive increase in the concentration of non-biodegradable toxicants in organisms at each successive trophic level.

Explanation:

Its is caused by harmful chemicals and pesticides like DDT,etc are sprinkled on crop plants to protect them from pest and diseases. these chemicals either wash down into soil or into waterbodies .From the soil these are absorbed by plants and from waterbodies ,these are taken aquatic plants and animals. In this manner the toxic chemicals enter food chain . As these chemicals are non-biodegradable they get accumulated in organisms body. Their concerlntration keeps on increasing at each trophic level.