Earth Day

Who founded Earth Day?

• Mahatma Gandhi

• Gaylord Nelson

• The United Nations

• Greta Thunberg

Where is Earth Day celebrated?

• Globally (all around the world)

• Mainly in Asian Countries

• The United States of America

• Europe

What protects the Earth as a shield to absorb harmful UV rays?

• The Moon

• The Thermosphere

• The Exosphere

• The Ozone Layer

There are approximately how many billion people on Earth right now?

• 5 billion

• 6 billion

• 7 billion

• 8 billion

Earth's atmosphere is mainly made up of what gas?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Argon

Trees help us and the Earth by releasing what gas?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Argon

About what percentage of Earth is made up by water?

• 17%

• 52%

• 71%

• 99%

Of the water on Earth, approximately what percent is fresh water?

• 3%

• 25%

• 50%

• 90%

How many trees are there on Earth?

• 3, 000

• 3 million

• 3 billion

• 3 trillion

What greenhouse gas is released into the air when burning fossil fuels? It is also the most dangerous gas damaging Earth's atmosphere.

• Carbon Dioxide

• Oxygen

• Argon

• Nitrogen