The Earth's climate is changing: Part 1
Most scientists and governments agree that the Earth's climate is changing. It is getting warmer.
Some changes are natural. But people are changing the climate in many ways too. Here are two examples.
1. We are changing the air
We are changing the air. We are adding carbon dioxide and other greenhouse gases to the air. These gases change the Earth's climate.
- Now there is too much of these greenhouse gases in the atmosphere. So the Earth is warming too quickly.
- Many countries are making plans to reduce greenhouse gases.
What are greenhouse gases?
The Earth's atmosphere contains gases. Some gases help keep the Earth warm. They are called greenhouse gases. For example: carbon dioxide (CO2).
Greenhouse gases trap heat in the atmosphere. They are like the glass in a greenhouse. The Earth would be very cold without these gases.
2. We are changing the land
We are changing the land. These changes affect the Earth's climate.
For example, we are cutting down trees and burning forests. How do trees affect climate? They remove carbon dioxide from the air.