Deforestation

Q.

How are mountains useful to man?

Q.

All the needs of animals living in a forest are fulfilled. Justify this statement in a few sentences.

Q. The process of combustion in the absence of oxygen is called:

1. Pyrolysis
2. Hydrolysis
3. Electrolysis
4. Dialysis

Q.

Define

(a) Composting

(b) Pyrolysis

Q. Indiscriminate cutting of trees in order to make land available for human uses is called .

1. deforestation
2. afforestation
3. farming

Q. Pyrolysis is a process of combustion in the absence of _________ .

1. nitrogen
2. oxygen
3. hydrogen
4. carbon

Q.

Forests provide food and shelter to various animals.

1. True
2. False

Q.

Which of the following statement regarding forest is incorrect?

1. Forests degrade the land.
2. Soil helps the forests to grow.
3. Forests prevent soil erosion.
4. Forests influence the climate and rain.

Q.

How does deforestation affect the increasing concentration of CO₂ , landslides and floods ?

Q.

State the reason for forest destruction.

Q. The cutting down of trees in large numbers for construction or for fuel is known as ___ .

Q.

Deforestation results in:

1. Change in weather condition

2. Ground water depletion

3. Increase in temperature on the earth

4. All of these

Q.

What is the main reason for deforestation?

1. For Paper

2. For Homes and Shelter

3. For Agriculture

4. For Wood

Q.

Which of the following is not a cause of deforestation?

1. For wood as a fuel.

2. Urbanisation.

3. Afforestation.

4. Making paper.

Q.

What is reforestation?

Q.

What is the effect of deforestation on earth?