The accumulation of ddt pesticide in eggshells is a direct result of the spraying of pesticide near eagle nests. true false

False, the accumulation of DDT in the eggshell of the Eagle is not due to the spraying of pesticides near the nest. The DDT has entered the body of Eagle first and traces of it were found in the eggshell. This is due to the process of biological magnification of DDT across the trophic levels of the ecosystem inhabitated by the Eagle. The DDT entered the body of producers first. The primary consumers eat the producers, and this leads to the increasing concentration of DDT in their body mass. Subsequently DDT passes through the other trophic levels to reach the apex predator, Eagles. Here the DDT is at its highest concentration as evident from its presence in the shell of the eggs.

substitution is the answer in this case