Question

system where life exists.
3.
The uppermost part of the lithosphere which is rich in silica and aluminium.
4.
The sphere of air that envelopes the earth.​

Answer 1

1.Question:

A situation or condition in which an organism lives.

Answer:

Habitat

2.Question :

The only planet in our solar system where life exists.

Answer :

Earth

3. Question:

The uppermost part of the lithosphere which is rich in silica and aluminium.

Answer :

The uppermost layer of the crust is called sial consisting of silicate and Aluminium (Si =silicate, Al= aluminium).

4. Question :

The sphere of air that envelopes the earth.

Answer :

Atmosphere

5.Question:

Mass of water on the earth's surface.

Answer :

About 71 percent

Answer 2

3. Question

The uppermost part of the lithosphere which is rich in silica and aluminium.

Answer :

The uppermost layer of the crust is called sial consisting of silicate and Aluminium (Si =silicate, Al= aluminium).

4. Question :

The sphere of air that envelopes the earth.

Answer :

Atmosphere

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