1.
A tremendous amount of energy is obtained from breaking and joining atom. This is called atomic energy.
2.
Option A
3.
Option A
4.
Living things breathe, move on their own, need food, feel, grow and reproduce.
5.
Option B
6.
Option A
7.
If sharp objects are not used properly, they can cut our skin.
8.
A food chain shows how living things depend on each other. Bigger depends on smaller ones and so on. It keeps on decreasing as we keep going the next level.
9.
Option A
10.
Option D
11.
Option A
12.
Option A
13.
Option B
14.
Option B
15.
Change of state from liquid to solid is an example of freezing.
16.
Soil is necessary because all plants grow in the soil. It is the home of many insects and small animals.
17.
Option B
18.
Option B
19.
Option A
20.
Chalky soil is a light brown soil. Water drains through it quickly.
