Ans 1. The skunks do not smell bad themselves but it is a defence mechanism in them which secretes a smelly
liquid. They possess two tiny anal glands at the base of their tail. Whenever threatened they turn
around, raise their tail and shoot the smelly liquid onto the face of the enemy. This drives the enemy
away.
Ans 2. Rainbow is formed as a result of refraction of light from suspended water particles after a rainfall.
These water droplets are present at a uniform height above the earth's surface. Since the earth is
spherical in shape, these particles are present in a spherical plane, enveloping the earth. If such a
plane of moisture is cut by sunlight, a circular line or the rainbow is generated. But to us only one
half of the rainbow is visible as our vision is restricted to the left and right horizons. That is why the
rainbow appears semi-circular.
Ans. 3. The earth completes one revolution around the sun in 3651/4 days. This period of 365 days
constitutes one earth year and every fourth year the extra quarters add up to make a year having one
more day. This year having 366 days is called a leap year.
So have anyone get the answers correct?
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