Human Activity Produces Lots of Greenhouse Gases

Question 1

Carbon dioxide - what do humans release in the atmosphere and in what form?

Answer 1

carbon dioxide and in forms of car exhausts, industrial processes, as we burn of fossil fuels

Question 2

Carbon dioxide - what happens to the carbon dioxide levels when we cut down trees and why?

Answer 2

because the tree take in carbon dioxide and exert oxygen and when there aren’t as many trees there is less oxygen and more carbon dioxide

Question 3

Methane - where is methane gas produced?

Answer 3

naturally from various sources - rotting plants in marshland

Question 4

Methane - what are the 2 main man made reasons how methane is produced? (the reason for the increase)

Answer 4

rice growing and cattle rearing

Question 5

Nitrous oxide - how is nitrous oxide released? (naturally)

Answer 5

By bacteria in soils in the ocean

Question 6

Nitrous oxide - when is most of it produced and how it is released? (by man made products)

Answer 6

mainly released in soils after use of fertilisers and it can also be produced from vehicle engines and industry

Question 7

CFC’s - why did countries agree not to produce them anymore?

Answer 7

because it damages the ozone layer that prevents UV radiation from reaching the earth

Question 8

CFC’s - what is a CFC and what is it used in?

Answer 8

used to be used in things like fridges, aerosol sprays and is man made and are chemicals