Q1.
What will happen if the Sun is not visible for a few days? 1. We may have to depend on artificial lighting during day time also. 2. ......... 3. .........
Answer
Point 1 is already filled in by the book. Here is what can go in points 2 and 3 — and several more.
- We may have to depend on artificial lighting during day time also. (given)
- Clothes, grain, papads and chillies will not dry, and damp clothes will smell and grow fungus.
- Solar panels, solar cookers and solar water heaters will stop working, so there will be less electricity and no free hot water.
- It will become cold — the Sun is what warms the land, the air and the water.
- Plants will not be able to make food properly, so leaves turn pale and crops grow poorly.
- Animals that feed on plants will go short of food, and so, in the end, will we.
- Less evaporation from seas and rivers means fewer clouds and less rain later.
- Many flowers will not open, birds will be confused about when to feed, and people will feel dull and sleepy.
Why so much depends on one star: the Sun gives every living being on Earth both heat and light. Plants get energy from the Sun and produce food; animals eat plants; we get food from both. This whole cycle on Earth is possible only because of the Sun. That is why one cannot imagine life on Earth without it.