Question

Raj and Krishan were playing a game - guessing the things from their

shadows. Raj held a cylindrical tube in his hand but when Krishan

looked at the shadow, he guessed the same as a ball. How was it

possible? State the related characteristic of the shadow.​

Answer 1

Question ⤵️

What is pollution?

Answer ⤵️

Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy, such as noise, heat, or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.

Extra Information ⤵️

• The substances causing pollution are called pollutants.
• Most of the pollution is caused by human activity.

Given below are some preventive measures of pollution:-

1. Reduce the number of trips you take in your car.
2. Reduce or eliminate fireplace and wood stove use.
3. Avoid burning leaves, trash, and other materials.
4. Avoid using gas-powered lawn and garden equipment.
5. Reduce the number of trips you take in your car.