Biosphere

Question 1

What is a biosphere?

Answer 1

The part of the earth where living organisms occur

Question 2

What does the biosphere consist of?

Answer 2

Atmosphere
Lithosphere
Hydrosphere

Question 3

What is the atmosphere?

Answer 3

The layer of air that surrounds the earth

Question 4

What does the atmosphere consist of?

Answer 4

A mixture of various gases

Question 5

What two gases in the atmosphere are essential to life?

Answer 5

CO2

O2

Question 6

What is the lithosphere?

Answer 6

The soil and rocks that comprise the outer layer of the earth

Question 7

What is the hydrosphere?

Answer 7

All the water on the surface of the earth

Question 8

Where does the hydrosphere occur?

Answer 8

Oceans
Lakes
Rivers
Water vapour

Question 9

How much of the earth does the hydrosphere comprise?

Answer 9

75% of the earth’s surface is covered by water