Chapter 1 - Life On Planet Earth

Question 1

Atmosphere

Answer 1

Gas layer hundreds of kilometres above the earth’s surface

Question 2

Percentages of Gasses on Earth

Answer 2

78% Nitrogen, 21% Oxygen, 1% assorted

Question 3

Lithosphere

Answer 3

Rocky shell of the planet above the volcanic mantle

Question 4

Habitat

Answer 4

A place where biological organisms are able to live.