E. Write short notes on thefollowing.
1. Nitrogen in the atmosphere
2. Global warming
3. Ozonosphere
4. lonosphere
Answers
Answer:
1. Nitrogen is an element that can combine with itself or with other elements to make different compounds. For instance nitrogen gas, N2, is a compound made when two nitrogen atoms form a chemical bond. It makes up about 80% of the atmosphere, while oxygen gas, O2, makes up a little less than 20% of the atmosphere.
2. Global warming is the phenomenon of a gradual increase in the temperature near the earth's surface. This phenomenon has been observed over the past one or two centuries. This change has disturbed the climatic pattern of the earth.
3. ozensphere is the other name of ozen layers.The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
4.the layer of the earth’s atmosphere between about 80 and 1000 kilometres above the surface of the earth, that sends radio waves back around the earth.