Which of the following statements is true?
Evaporation is the main way water enters the atmosphere.
Condensation is the opposite of evaporation.
The total amount of water on the earth stays the same.
all of the above

Evaporation is the main way water enters the atmosphere.

Explanation:

Evaporation is the main way moisture enters the atmosphere. The amount of evaporation is not the same all of the world. Most evaporation happens over large bodies of water, like oceans and seas. Very little evaporation happens in dry areas, such as deserts. The amount of water on earth is constant. This means it does not change.  

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons