Atmosphere

Maximum amount of gas found in air is

• nitrogen

• carbon dioxide

• hydrogen

• oxygen

The layer of the atmosphere act as a blanket protecting the Earth from extreme heat during the day.

• Exosphere

• Mesosphere

• Troposphere

• Stratosphere

What protects Earth from ultraviolet rays from the sun?

• ozone layer

• mesosphere

• air pressure

• troposphere

The ozone layer is made up of oxygen elements that protect living forms on Earth from UV (ultraviolet) radiation. What is the chemical formula for ozone?

• O₄

• O₃

• O₂

Name the most abundant gas in the atmosphere.

• Helium

• Argon

• Carbondioxide

• Nitrogen

Select Causes of Global Warming

• Deforestation and Mining

• Afforestation and Dumping