94 Write the name which is given to the layer of air which surrounds the earth. What is the role of this layer?
Final answer: The Atmosphere is the layer of air that surrounds the earth.
Name the common air pollutant which causes depletion of ozone layer.
20 (c) Replace the following with a word or phrase
the layer of air surrounding the earth
Why do plant cells have an additional layer surrounding the cell membrane? What is this layer known as?