Which is not a measure to prevent ozone depletion?

1. Increase private vehicle driving
2. Avoid using pesticides
3. Ban the use of dangerous nitrous oxide
4. Strict laws for rocket launches

The atmospheric layer that lies just above stratosphere

1. Troposphere
2. Mesosphere
3. Ionosphere
4. Exosphere

According to the report of …………… , 72 percent of global warming is contributed by carbon dioxide, methane and nitrous oxide

1. IPCC
2. CPII
3. PICC
4. CICP

Fill in the blanks:

(a) …………… coming from the sun penetrates the atmosphere and is absorbed by the earth.

(b) Concentration of greenhouse gases has risen rapidly due to …………… .

(c) The oceans serve as a …………… for carbon dioxide.

(d) The degree at which water vapour is present in the air is called …………… .

(e) The ozone layer lies in the …………… between 16 and 50 km above the earth’s surface.

(f) Many …………… spray cans contain harmful chemicals called chlorofluorocarbons (CFCs).