you have been away attending college for three months. when you return home for the winter break, your family dog recognized you immediately. your dog responded this way because his brain

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

a = executive branch; b = judicial branch