Updated By SaraNextGen

On April 21, 2024, 11:35 AM

Question 6:

The layer of air around the Earth is known as __________.

Answer:

The layer of air around the Earth is known as __atmosphere__.

Question 7:

The component of air used by green plants to make their food is __________.

Answer:

The component of air used by green plants to make their food is _carbon dioxide_.

Question 8:

List five activities that are possible due to the presence of air.

Answer:

(i) Respiration

(ii) Photosynthesis

(iii) Burning

(iv) Movement of sailing yachts, gliders, parachutes, airplanes

(v) Generation of electricity by windmills

Question 9:

How do plants and animals help each other in exchange of gases in the atmosphere?

Answer:

Plants utilize carbon dioxide present in the atmosphere for the process of photosynthesis. They release oxygen in the atmosphere. This oxygen is inhaled by humans and in turn, carbon dioxide is exhaled.

In this way, plants and animals help each other in exchange of gases in the atmosphere.