Question

A *gaseous, non-metal*, the *most abundant element on earth*. It makes up come *21% of earth's atmosphere* and is *essential to most forms of life.*

Answer 1

Oxygen is a gaseous, non-metal element that is the most abundant on Earth. It makes up around 21% of Earth's atmosphere and is essential to most forms of life.

Step-by-step explanation:

Oxygen is a gaseous, non-metal element that is the most abundant on Earth. It makes up around 21% of Earth's atmosphere and is essential to most forms of life. Oxygen is used by all living things to make molecules that are essential for life and is also necessary for aerobic respiration and combustion.