The answer would be letter b
Answer:
eight protrons
Explanation:
Oxygen is a chemical element – a substance that contains only one type of atom. Its official chemical symbol is O, and its atomic number is 8, which means that an oxygen atom has eight protons in its nucleus.
Global air circulation cells move air clockwise in thee Northern hemisphere and counter clockwise in the Southern hemisphere. The global air circulation cells move air from low pressure to high pressure also, but not in a different directions at different latitudes randomly.
Answer:
The answer to the first one is B. A mechanism for the evolution of a population to become better adapted to their environment over many generations.
The answer for the second one is C.vestigial
Explanation:
I believe that it is form the Paleozoic era