Global warming is caused by:
Increase in the level of CO2 in air.
Decrease in H2O.
Increase is both CO2 and H2O.
Increase in CO2
Layer of the Earth where life is possible.
Biosphere
Mesosphere
Lithosphere
Aesthonosphere
Where is wind energy is generated?
Solar panel
Dams
Wind mills
Bio-waste
What does World Wildlife Fund encourage?
People to save forest.
People to save wildlife.
Both a and b
People to destroy forests
The study of living things in their natural surrounding is:
Environment
Ecologist
Ecology
Botanist
What do pollutant gases cause?
Heavy rain
No rain
Mild rain
Acid rain
Water pollution causes:
Respiratory diseases
Dysentery
Deafness
High blood pressure
What is deforestation?
Destruction of forests.
Hunting animals for clothing.
Killing of infants.
Killing of insects.
What do farmers use to kill weeds?
Chemicals
Fertilizers
Pesticides
Food waste
Find out the degradable substances out of these.
Dry grass, cow dung, vegetable waste
Glass, rubber, paper
Plastic bag, glass, tyres
Grass, paper, plastic
