What is an atmosphere?

• the part of the city that has unusual activities

• the high point

• a mixture of gases that surround the earth

• gases that come from volcanoes

What are emissions?

• substances that are sent out into the air

• only smoke that comes from a car

• chemicals dumped into the sewers

• dangerous substances that cause disease

What are fossil fuels?

• are not produced in Saudi Arabia

• includes only gas bought as gas stations

• alternative energy like wind mills

• substance such as coal or oil

What is escape?

• to leave class

• to get out

• only when someones leaves prison

• only when water drips from your pipes

What is carbon dioxide?

• gas breathed out by people and animals

• the air that humans and other animals breathe

• gas that is breathed in by people and animals

• gas that is healthy for the environment

Most scientists believe there is an enough _________________________ to demonstrate global climate change.

Saudi Arabia is very hot, I might have to move to a cooler ______________________.

The world is becoming more polluted everyday. People are going to have to __________________________ to conserving our natural resources.

Most people today understand that there is a _______________________ between climate change and human activity.

The __________________ in our environment determine the quality of the air we breathe.