Question

3. Air pollution can be reduced by :
(a) Planting more trees
(b) Having no factories
(c).Reducing the numbers of animals.
(d).Throwing garbage in bins.
4. Which gas is a supporter of combustion :
(a) Oxygen
(b) Nitrogen
(c).Hydrogen
(d).Helium
5. The gas used in light bulbs is :
(a) Neon
(b) Argon
(c) Helium
(d) Oxygen

Plz answer fast!!!!!​

Answer 1

3.Air pollution can be reduced by planting more trees.

4.oxygen gas is a supporter of combustion.

5.Argon is used in light bulb

Answer 2

Answer:

3. Air pollution can be reduced by :

(a) Planting more trees

(a) Planting more trees(b) Having no factories

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

4. Which gas is a supporter of combustion :

(a) Oxygen

Sufficient amount of Oxygen gas is a supporter of combustion.

5. The gas used in light bulbs is :

(b) Argon

Argon is a commonly used gas, used to fill incandescent light bulbs. It increases the bulb life by preventing the tungsten filament from deteriorating too quickly. Other gases such as helium, neon nitrogen and krypton are also used in lightning.