Biology
Grade-8
Easy
Question
Hint:
1-B
2- D
3-A
4-C
- Acid Rain is caused by a chemical reaction that begins when compounds like sulfur dioxide are released into the air.
- Decomposition is the break down of dead and decay matter.
- Human beings form the biotic component of Ecosystem.
- The uptake of nitrogen and other nitrogen compounds by roots in the soil is called Assimilation
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