The Evolution Of The Atmosphere

Question 1

What is most of the atmosphere

Answer 1

Nitrogen

Question 2

What is the percentage of nitrogen in the atmosphere

Answer 2

80%

Question 3

What is the percentage of oxygen in the atmosphere

Answer 3

21%

Question 4

What other small proportions of other gases are there in the atmosphere

Answer 4

Carbon dioxide, water vapour, noble gases

Question 5

In the early atmosphere what gas was there mainly

Answer 5

Carbon dioxide with small but increasing amount of nitrogen

Question 6

Whats the difference of carbon dioxide in the early atmosphere and the atmosphere today

Answer 6

The early atmosphere contained a lot of carbon dioxide but the atmosphere today only contains a little amount

Question 7

What happened to the water vapour from the volcanoes

Answer 7

It condensed to form the oceans and lots of carbon dioxide dissolved in the oceans

Question 8

What happened when green plants and algae evolved

Answer 8

They took in some carbon dioxide during photosynthesis

Question 9

What happened to the dissolved carbon dioxide in the oceans

Answer 9

It formed carbonates that precipitated as small solid particles

Question 10

What produces oxygen which then entered the atmosphere

Answer 10

Photosynthesis

Question 11

What happened to over the billion years of photosynthesis

Answer 11

Plants evolved and it increased the amount of oxygen in the atmosphere

Question 12

What is the equation of photosynthesis

Answer 12

Carbon dioxide + water > glucose + oxygen

Question 13

What does photosynthesis take in

Answer 13

Carbon dioxide