B3.4.2 Deforestation and the destruction of areas of peat

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• B3.4.2 Deforestation and the destruction of areas of peat

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The picture shows a forest being cleared so that rice can be grown. The trees are chopped down and then burned.

(a) Complete the sentences by using the correct words from

the box

acid rain carbon dioxide the greenhouse effect methane sulphur dioxide

Burning trees give off the gas ............................................................................ .

The rice crop will increase the amount of the gas .................................. in the atmosphere. These two gases help to cause ………………………………………………………..(3)

(b) Burning fossil fuels also causes pollution.

Name one fossil fuel..................................................................................................(1)

(Total 4 marks)

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(a) carbon dioxide 1

Methane 1

greenhouse effect 1

(b) coal / oil / gas / peat / petrol / paraffin

1

[4]

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(a) The world-wide use of fossil fuels has increased rapidly during this century.

(i) Give two reasons for the increase in the amount of fossil fuels used.

1 ........................................................................................................................

2 ........................................................................................................................ (2)

(ii) Give two effects on the environment of this increase in the amount of fossil fuels used.

1 ........................................................................................................................

2 ………………………………………………………………………………………………………….. (2)

(b) Describe and explain the long term effects of large-scale deforestation on the Earth’s atmosphere.

.....................................................................................................................................

……………………………………………………………………………………………………………………... (4)

(Total 8 marks)

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(a) (i) 2 of:increase in populationincrease in living standardsexampleany 2 for 1 mark each2(ii) pollution effects OWTTEdestruction of habitats by extraction methodsgains 2 marks(allow 2 pollution effects)2(b) 4 of e.g.trees can no longer photosynthesiseremoving carbon dioxide from atmosphere and ‘locking it away’ long termincreased carbon dioxide concentration leads to more absorption of reflected energy atmosphere therefore warms any 4 for 1 mark each4[8]