Question

Fill in the blanks to complete the statements about the gases in Earth’s atmosphere. Earth’s atmosphere is mostly nitrogen, which makes up about 78 percent of the atmosphere, and , which makes up about 21 percent. in the air condenses around tiny particles, causing clouds and rain. The gas exists in small amounts but is very important because plants use it to make food.

Answer 1

Earth’s atmosphere is mostly nitrogen, which makes up about 78 percent of the atmosphere, and

✔ oxygen

, which makes up about 21 percent.

✔ water vapor

in the air condenses around tiny particles, causing clouds and rain. The gas

✔ carbon dioxide

exists in small amounts but is very important because plants use it to make food.

Step-by-step explanation:

Answer 2

1) Oxygen

2) water vapor

3) carbon dioxide