Question

what is the composition of air
when we pour water on a lump of dry soil why do bubbles come out

Answer 1

Explanation:

1. Air is a mixture of 79% nitrogen, 20% oxygen, 1% carbon dioxide, water vapours and some other gases. Air also contains dust particles.
2. Bubbles are formed when trapped air is trying to release itself and move outwards. The action of adding water pushes the air into the soil

Answer 2

Answer:

Air is mostly gas

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Explanation:

Bubbles are formed when trapped air is trying to release itself and move outwards. The action of adding water pushes the air into the soil.