Question

1. The heat absorbed by the air inside the greenhouse is trapped inside which gives warmth to
the plants during the thoumadina
9. Oxygen is nearly
percentage of the gases present in the atmosphere.​

Answer 1

Answer:

21%

Oxygen makes up 21% of the atmosphere. It is highly reactive and forms compounds with numerous other chemicals and is necessary for respiration in living things. Oxygen is a colourless, odourless, tasteless gas composed of the simple diatomic molecule O2.