Unit 4 Earth matters

To make something get better.

• provide

• improve

• reduce

• shade

The natural environment in which animals or plants live is called

Soil being gradually damaged

Make things smaller in size and quantity

Trees clean the air and .......................... oxygen.

• reduce

• improve

• provide

• decrease

Buildings where energy is produced are called

• solar panels

• refilling stations

• electricity

• energy plants

Devices that control the flow of water from a pipe are called

• faucets

• sensors

• panels

• controllers

The process of removing salt from sea water is called

The scientists want to reduce the ........................... of carbon dioxide (CO2).

• power

• pollution

• recycling

• emission

Cities that take care of the environment and make sure to produce as little carbon of waste as possible are called ................................................... cities.