Environment

Air has highest concentration of following gas in descending order

• NO2, O2, Argon

• NO2, O2, CO2

• NO2, CO2,O2

• O2,NO2, CO2

When is World Environment Day is celebrated?

• 5 February

• 5 August

• 5 June

• 5 may

All energy on Earth ultimately comes from what source?

• Water
• Sun
• Consumers
• Oxygen

What does the Ozone in the atmosphere do?

• causes the greenhouse effect

• causes acid rain

• protects the Earth from harmful infrared (IR) rays

• protects the Earth from harmful ultraviolet (UV) rays

What damage can UV rays cause?

• can cause sunburn.

• can cause some types of skin cancer.

• cataracts.

• all of the above

What is causing damage to the Ozone layer?

• Methane

• Carbon dioxide

• CFCs

• All of the above

Warming of the atmosphere that occurs when certain gases absorb part of the solar radiation reflected by the Earth. It is called....

• Acid rain

• Conservation

• Greenhouse effect

• Water pollution

What are the 3 R's?

• Reduce, Recycle, Remake

• Right, Reason, Reduce

• Reduce, Reuse, Recycle

• Restore, Reuse, Remake

People cut down a large number of trees'

Which environmental problem does it refer to?

• water pollution

• deforestation

• air pollution

• global warming

What does a food chain always start with?

• The herbivore

• The carnivore

• The producer

• The consumer