1.
After birth, it is believed that the body is on longer able to from:
2.
Early morning heavy dew is most likely to be the result of:
3.
The weight of a man on the surface of the moon will be only about one-sixth of his weight on the earth because
4.
The production of excess pigment in the skin is stimulated mainly by :
5.
As a person becomes older, his blood-pressure generally:
6.
Digestion of food starts in:
7.
The American genetist who discovered the effect of X-ray on mutation rate in the drosophila was:
8.
The Planets are kept in motion in their orbits by:
9.
At sun rise or sun set the sun appears red because:
10.
When a Soap film on water is seen in daytime, it shows beautiful colours. This phenomenon is due to :
