Question

Please select the word from the list that best fits the definition

makes up 21 percent of the atmosphere
-conduction
-convection
nitrogen
-oxygen
-Ozone
-radiation
-smog
-water vapor

Answer 1

Oxygen

Step-by-step explanation:

Oxygen makes up 21% of earths atmosphere while nitrogen fills up 78%.

Answer 2

oxygen

Step-by-step explanation:

The oxygen makes up 21% of the atmosphere. hope it helps.