10. Composite volcanoes a. are sometimes called layered
volcanoes.
b. have narrow bases.
c. have less steep slopes as they approach
the top
d. are one of the least common
volcanoes.

The answer is probably A

Explanation:
It cannot be B as it has broader base, cannot be C as it gets steeper as you approach the top and they are very common. (Also, it is called stratovolcano which has layers)

The real answer is keeping the world healthy so we won’t die

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom