Class 8 Science Online Tests
Human Activities and Ecosystem MCQ (Multiple Choice Questions) PDF Download
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Human Activities and Ecosystem MCQs: Questions and Answers PDF Download
The dodo became extinct in
- 1681
- 1961
- 1896
- 1861
Smoke particles and harmful gases released in air produces a
- smoke
- haze
- fog
- smog
Fertilizers supports growth of
- algae
- fruit plants
- vines
- pines
If untreated waste water will be directly spill in to rivers, sea and lakes it may
- contaminate
- polluted
- spread diseases
- all of them
When forests are cleared on a very large scale by cutting or burning them down it is
- forestation
- deforestation
- plantation
- incantation
Class 8 Science Practice Tests
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