Plants take in carbon dioxide and give out oxygen.
2 The factory makes paper products.
3 Scientists move the research data into the computer.
4 The Sun provide light.
5 Power from the wind can provide energy for our homes.
6 The process makes rainclouds.
7 Solar panels change light into heat.
8 Pollution goes into rivers.
9 This process makes a chemical reaction.
10 Sodium changes with chlorine to make sodium chloride, or salt.