Geography

Hcfcs and CFCs are chemicals containing........... compounds

• Chlorine

• Hydrogen

• Oxygen

Ozone layer is found in the

• Stratosphere

• Troposphere

• Exosphere

What causes the rise in the concentration of nitrous oxide in the atmosphere

• Use of fertilizer

• Cattle rearing

• Sewage treatment

Which greenhouse gas stays longer in the atmosphere?

• Carbon dioxide

• Ozone

• Water vapour

Oil, gas and coal are examples of

• Fossil fuel

• Petroleum

• Lubricant

An example of greenhouse gas is..............

• Hydrogen

• CFCs

• Oxygen

The planting of trees in entirely new places where none existed is called

• Reforestation

• Afforestation

• Deforestation

The felling of timber is called

• Falling of trees

• Deforestation

• Lumbering

Animals found in an area or forest is called

• Flora

• Fauna

• Fibre

A bush with big trees is a

• Forest

• Jungle

• Vegetation