IGCSE O Level Biology MCQs - Chapter 7
Effects of Human Activity on Ecosystem Multiple Choice Questions (MCQ) PDF Download - 2
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Effects of Human Activity on Ecosystem Test Questions and Answers PDF Download: MCQ 2
Bacteria grow and multiply rapidly in
- aerobic environment
- anaerobic environment
- water
- soil
Gaseous pollutants may be carried to other countries to
- form acid rain
- cause acidification of soil
- form alkaline rain
- cause water pollution
Non-renewable sources do not include
- fossil fuels
- minerals
- air
- water
Desertification is caused due to
- overgrazing
- topsoil is eroded
- rapid water evaporation from the soil
- all of above
Forests can not be conserved if
- timber trees are cut down worldwide
- timber trees are cut down selectively
- if rate of plantation exceeds rate of cutting trees
- new seedlings are planted and grown trees are cut
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