DDT residues are rapidly passed through food chain causing biomagnification because DDT is lipid soluble.

Explanation:
DDT is a synthetic organic compound that is used as an insecticide. It has been widely used in agriculture and public health programs to control pests such as mosquitoes and agricultural pests. DDT is a persistent organic pollutant that is highly toxic to many organisms including humans.

When DDT is sprayed on plants or soil, it can enter the food chain through a process called biomagnification. Biomagnification is the process by which toxic substances like DDT become more concentrated as they move up the food chain. This means that animals at the top of the food chain, such as birds of prey and mammals, can accumulate high levels of DDT in their bodies.

DDT is lipid soluble, which means that it can dissolve in fats and oils. This property of DDT makes it highly toxic and persistent in the environment. When DDT enters the food chain, it is absorbed by the organisms and stored in their fatty tissues.

As these organisms are eaten by other organisms, the DDT accumulates in the fatty tissues of the predators, becoming more concentrated as it moves up the food chain. This process continues until the top predators, such as eagles or humans, have high levels of DDT in their bodies.

In conclusion, DDT is rapidly passed through the food chain causing biomagnification because it is lipid soluble and can accumulate in the fatty tissues of organisms. This property of DDT makes it highly toxic and persistent in the environment, which can have serious consequences for the health of ecosystems and humans who consume contaminated food.