Answer: A
Explanation: The answer is A.
Natural selection is the process in nature by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment. For example, treefrogs are sometimes eaten by snakes and birds.
Answer:
The cell membrane (also called the phospholipid bilayer or the plasma membrane) is one of the most important structures a cell has. If you think of the cell as a really popular nightclub, the membrane is the bouncer. It decides what enters and exits the cell.
The smooth ER sends the lipids to the golgi which in turn sends them elsewhere in the cell or outside of the cell.
Answer:
B. Rock Layers
Explanation:
The definition is a layer or a series of layers of rock in the ground.