deforestation & land use Flashcards

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1
Q

list 5 ways humans reduce the amount of land available

A

-quarrying
-building
-crop growing
-farming
-waste dumping

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2
Q

what are bogs?

A

areas of land that are acidic and waterlogged

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3
Q

how is peat formed?

A

-plants that live in bogs don’t fully decay as there’s not enough oxygen
-gradually build up to form peat

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4
Q

what is stored in peat and why?

A

carbon as plants don’t fully decay so it isn’t released to the environment

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5
Q

what is peat used for?

A

-drained to be used as farmland
-cut up and dried to be used as fuel
-sold as compost

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6
Q

what is the issue with destroying bogs?

A

-destroys habitats of some of the animals, plants and microorganisms so reduces biodiversity

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7
Q

what is the issue with draining peat?

A

-comes into more contact with air and microorganisms start to decompose it
-when microorganisms respire, they use oxygen and release carbon dioxide contributing to global warming

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8
Q

what is the issue with burning peat as fuel?

A

-carbon dioxide is released contributing to global warming

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9
Q

what is the impact of quarrying?

A

-destroys habitats

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10
Q

what is the impact of dumping waste?

A

-more pollution occurs

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11
Q

deforestation

A

the cutting down of forests

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12
Q

why does large-scale deforestation occur?

A

-provide land for cattle and rice fields
-grow crops for biofuels

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13
Q

what is the issue with cattle and rice fields?

A

both release methane which contributes to global warming

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14
Q

what are the 3 main issues with deforestation?

A

-less carbon dioxide taken in as photosynthesis is reduced due to the lack of trees
-more carbon dioxide in the atmosphere as it is released when trees are burnt and microorganisms feed on bits of dead wood release carbon dioxide as a waste product of respiration
-less biodiversity as habitats are destroyed

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