Which macromolecule forms a double layer as the primary structure of cell membranes? fats oils phospholipids steroids

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:

the answer is d.) homologous; have mammary glands