Fill up:
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.
Answers
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- reserviour rock
- carbon dioxide
- deforestation and desertification
- anaerobic
- green house
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