Question

Tree good paper shadow wood oxcygen
Tell me a pharagrap

Answer 1

Answer:

Tree plays a very important role in human life as they give us good paper to write, shadow to get relax and oxygen to breath...... and so on

Answer 2

Answer:

Cutting of wood,tree and paper does not involve any chemical reaction and wood and paper does not lose their identity afer cutting so these are physical changes.

A process which involves a change at molecular level, due to which a new substance is formed, is called a chemical change. Chemical change is irreversible. For example, formation of rust on a iron rod, or changes in an egg after boiling.

Have a good day ahead:)