2. Almost all our energy comes from oil, coal, and natural gas. We call themfossil fuels. The
earth's fossil fuels are running out. What will happen when there is no oil, coal and gas on
the earth? Scientists are trying to find and use other alternative sources of energy. We can
use energy from the sun, the wind, and the water. Solar energy is unlimited. The sun
supplies all the energy used to grow plants, to evaporate water for the rain, and to maintain
the temperature of the planet. All are necessary for human life. If we are able to collect solar
energy, we will be sure to have this abundant source of power.
statements
1. Almost all our energy comes from oil, coal, water and natural gas.
2. The earth's fossil fuels are running out.
3. We can use energy from the sun and the moon.
4. Solar energy are necessary for human life.