‘Soil erosion’ can be prevented by:
- (A) Overgrazing
- (B) Removal of vegetation
- (C) Afforestation
- (D) Deforestation
- (C) Afforestation
Which of the following is the fastest growing tree?
- (A) Bamboo
- (B) Teak
- (C) Eucalyptus
- (D) Banyan
- (C) Eucalyptus
The maximum fixation of solar energy is done by:
- (A) Fungi
- (B) Protozoa
- (C) Bacteria
- (D) Green plants
- (D) Green plants
Which is the purest form of water?
- (A) Lake water
- (B) Sea water
- (C) Rain water
- (D) Pond water
- (C) Rain water
Which of the following is known as the man’s most useful tree?
- (A) Teak
- (B) Walnut
- (C) Mango
- (D) Coconut
- (A) Teak
The tree species most commonly used in soil forestry is:
- (A) Peepal
- (B) Gulmohar
- (C) Eucalyptus
- (D) Deodar
- (C) Eucalyptus
The part of Earth that is completely covered with trees is known as:
- (A) Fossils
- (B) Forests
- (C) Trees land
- (D) Print point
- (B) Forests
The most serious environment effect posted by hazardous wastes is:
- (A) Air pollution
- (B) Destruction of habitat
- (C) Contamination of ground water
- (D) Increased use of land for landfills
- (C) Contamination of ground water
In which type of rocks are coal and petroleum found?
- (A) Granite
- (B) Igneous
- (C) Sedimentary
- (D) Metamorphic
- (C) Sedimentary
In the ocean, water moves horizontally over vast areas due to:
- (A) Waves
- (B) Currents
- (C) Density difference
- (D) Slope of the ocean floor
- (C) Density difference