Question

give scientific reason for the following statemeny:-

1. Blacksmith heats the metal rim to fix it on a cart wheel.

2.Leaves of few plants modified into tendrils

3.The earthworm is called the friend of a farmer.​​

Answer 1

Explanation:

1.

metal rim is made slightly smaller and On heating, it expands and fits onto the wheel. on cooling,it contracts and fits tightly onto the wheel.

2. to reduce water loss and to protect themselves from birds and animals

3. They help in decomposition of organic matter and improves the quality of soil.