B3 - Deforestation Flashcards
1
Q
Why does deforestation occur? [3]
A
1) to obtain timber for building.
2) to clear land for farming.
3) to produce paper.
2
Q
How cab deforestation lead to a rise in the atmosphere’s methane level? [2]
A
1) rice is grown in warm/damp conditions. Decomposers grow and produce methane.
2) cattle release methane.
3
Q
How does deforestation lead to a rise in CO2 levels? [3]
A
1) trees are burned.
2) microorganisms feeding on the dead wood respire CO2.
3) less CO2 taken in during photosynthesis.
4
Q
How can deforestation lead to extinction?
A
Habitats are destroyed so there will be less biodiversity.
5
Q
What is deforestation?
A
Cutting down trees.
