What else contributed to the decline of the bald eagle population in the United States?

there was hunting and destruction of there habitats

Habitat destruction and degradation, illegal shooting, and the contamination of its food source, due to use of the pesticide DDT, decimated the eagle population.

I guess it's the answer you are looking for!

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101