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Chapter 27 - Man and his Environment - 7
1.
The destruction of forests leave the soil barren and this is called reforestation
a) False
b) True
2.
A forestation is establishment of a new forest where no forests existed previously.
a) True
b) False
3.
One of the most characteristic feature of the tropical forests is the enormous diversity of species they contain.
a) True
b) False
4.
The decline in the thickness of the ozone layer is caused by the increasing level of CO
2
.
a) False
b) True
5.
Global warming due to green house effect may lead to rapid melting of ice caps and glaciers.
a) False
b) True
6.
Acid rain is responsible for stone cancer.
a) False
b) True
7.
AIDS, tubericulosis and cholera are physical disorder.
a) False
b) True
8.
Hemophilia and Turner’s syndromes are Genetic diseases.
a) True
b) False
9.
Certain bacteria cause diseases like typhoid and small pox when they get into the human intestine
a) False
b) True
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