Which gas is considered as life supporting?
a) argon
b) nitrogen
c) hydrogen
d) oxygen
The lowest layer of atmosphere is………….
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere
Which of the following layer of atmosphere has enough air to support life?
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere
Troposphere start at earth’s surface and goes up about…………. Above the surface.
a) about 4 km to 6 km
b) about 6 km to 8 km
c) about 8 km to 12 km
d) about 8 km to 16 km
Most weather condition happen in this layer.
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere
Moving air is called…………
a) pressure air
b) wind
c) wind vane
d) none of these
