Desertification

Q. Conversion of fertile land into desert is known as ______ .

1. Cultivation
2. Humification
3. Desertification
4. Aquaculture

Q.

What is desertification ? Name one human activity which may lead to desertification.

Q.

What are the 5 major impacts humans have on the environment?

Q.

Explain how, deforestation makes the soil infertile leading to desertification.

Q.

Forest causes rain.

1. True
2. False

Q. Which of the following are the effects of deforestation?

1. Global warming
2. Desertification
3. Creation of habitats for animals

1. Only $3$
2. Both $1\text{and}2$
3. Only $1$
4. Only $2$

Q. What is desertification?

Q.

The process of land degradation by which a region becomes progressively drier and drier is called ___.

Q.
Which one of the following changes may occur due to desertification?

(a) Decrease in atmospheric temperature.
(b) Increase in water holding capacity of soil.
(c) Increased chances of floods.
(d) Conversion of fertile land into a desert.

Q.

List out the consequences of deforestation.

Q.
Which one of the following changes may occur due to desertification?

(a) Decrease in atmospheric temperature.
(b) Increase in water holding capacity of soil.
(c) Increased chances of floods.
(d) Conversion of fertile land into a desert.

Q.
Which one of the following changes may occur due to desertification?

(a) Decrease in atmospheric temperature.
(b) Increase in water holding capacity of soil.
(c) Increased chances of floods.
(d) Conversion of fertile land into a desert.

Q. The process of conversion of forests to pastures, then into arid land and finally into deserts is known as .

1. soil preparation
2. soil erosion
3. desertification
4. pasteurization

Q.

Which of these is not caused by deforestation?

1. Global Warming
2. Desertification
3. Soil erosion
4. Storms

Q. Plantation of trees on a large scale to check soil erosion are called ______________.

1. Shelter belts
2. Contour ploughing
3. Strip cropping
4. Afforestation

Q. Deforestation in large parts of the globe led to the reduction of soil erosion.

1. True
2. False

Q. Which amongst the following would be the consequences of forest disappearance?

1. Soil erosion
2. Desertification
3. Rainfall
4. Increase in oxygen level

Q.
Which one of the following changes may occur due to desertification?

(a) Decrease in atmospheric temperature.
(b) Increase in water holding capacity of soil.
(c) Increased chances of floods.
(d) Conversion of fertile land into a desert.

Q.

Twenty- five per cent of India's total land is undergoing desertification. What do you understand by desertification? How is deforestation responsible for desertification? Suggest measures to reverse desertification. [5 MARKS]

Q.

Mention two precautions which farmers can take to save their crops from disasters which occur every years.

Q. Define the following

1. Hydrological cycle
2. Surface water
3. Groundwater
4. Water table
5. Aquifer
6. Humus
7. Drip irrigation