Question

Fill up: (fill answers according to coal and petroleum chapter)
1) oil and natural gas accumulate over the layer of __________.
2) _____________produces by burning fossil fuels is the major cause of global warming.
3) ________and_________ are the major causes of exploitation of the natural resources.
4) _________bacteria act in the absense of air
5) Excess of carbon dioxide in the atmosphere cause ____________effect. ​

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Answer 1

1. soil
2. ....
3. deforestation and soil erosion
4. Clostridium
5. greenhouse gas