Question

3. The soil becomes infertile and unfit for organisms due to (a) release of harmful gases (b) dumping of solid waste (c) excessive bathing of animals (d) planting more trees 4. Which of these causes black patches on the skin? (a) Mercury (b) Arsenic (c) Lead (d) Aluminium 5. The method of waste disposal that causes air pollution is (a) landfills (b) composting (c) vermicomposting (d) incineration 1​

Answer 1

3: dumping of solid waste

4: Arsenic

5: landfills

Answer 2

Answer:

3. (d) planting more trees

Explanation:

It's because the excessive amount of plants will take more and more minerals and water than usually and the soil become unfertile quickly.