Final answer:
Without the concentration of DDT in the seal's tissue, it is not possible to determine the exact amount of DDT a bald eagle would consume. Eagles are at risk of higher DDT levels due to biomagnification but populations have recovered since the US DDT ban in 1972.
Step-by-step explanation:
If the bald eagle eats 300 g of seal, it is necessary to know the concentration of DDT in the seal to determine how much DDT the bald eagle would consume in one day. Without information on the DDT concentration in the seal's tissue, it is impossible to provide an exact amount. In the context of bioaccumulation, given the trophic level of the bald eagle as a predator, it is likely to ingest higher levels of DDT compared to animals lower in the food chain due to the process of biomagnification.
Biomagnification refers to the increase in concentration of a substance, such as DDT, in an organism as it eats other organisms that have the substance in their bodies. Since the US government banned DDT in 1972, affected populations of birds, including bald eagles, have shown remarkable recoveries. This is attributed to the decrease in environmental DDT levels and subsequently reduced contamination in their food sources, allowing for better reproduction rates due to stronger egg shells.