ATMOSPHERWE AND ITS PROTECTION

The atmosphere is:
1. an air cover of the Earth
2. a water cover of the Earth
3. a soil cover of the Earth
The lowest layer of the atmosphere is:
1. troposphere
2. stratosphere
3. mesosphere
Which layer do organisms live in?
1. troposphere
2. stratosphere
3. mesosphere
How much nitrogen does the atmosphere involve?
1. 78%
2. 21%
3. 1%
Which layer is ozonosphere in?
1. in troposphere
2. in mesosphere
3. in stratosphere
Which layer reflects radio waves?
1. stratosphere
2. ionosphere
3. mesosphere
The substance which gets into the air from exhaust pipes is called:
1. emission
2. air pollutants
3. inversion
Imission is:
1. substance getting into the atmosphere
2. substance formed by reactions of emissions and air components
3. thermal inversion
Ozonosphere is damaged by:
1. freons
2. lead
3. nitrogen
The outermost layer of the atmosphere is called:
1. exosphere
2. ionsphere
3. mesosphere