Hypothesis - The temperature falls with the increase in the altitude
Observation - The average temperature on the plain is 20 degrees Celsius
Question - B. Why it snows on the mountain?
Result - C. Graph showing fall in temperature
It keeps them out side the body to maintain the correct temperature.
The correct option is D.
A virus refers to an infectious micro organism that is made up of nucleic acid molecule that is enclosed within a protein coat. Viruses are only able to reproduce and multiply when they come in contact with living cells, in the absence of living cells they remain dormant and they do not show any sign of been a living thing. The nuclei acid molecule of a virus can be in form of a DNA molecule or a RNA molecule.
the answer is A according to my knowledge.
