Question

EXERCISES:
I. Fill in the blanks:
1. Nitrogen comprises
78% of the atmosphere.
2. Ionosphere plays an important role in communication of radio waves -
3. Ozone layenabsorbs ultraviolet rays.
4. Almospherle is an envelope that surrounds the earth.
5. Carbon dioxide is also called as greenhouse
is a consequence of air pollution which may melt polar icecaps.
gas.
6.
Temperature is
II. Write true or false:
1. Troposphere contains ozone layer. P
2. Biosphere does not surround us.
3. Atmosphere is the source of many gases. T
4. The combination of natural water and dust is called smog F
5. Heat islands are formed in villages. F
check n tell me whether this is correct or not from the pic. ​

Answer 1

Answer:

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