Choose the correct answer :       1. Coal is formed under the Earth's surface from the remains of   ............                                a. dead animals.      c. dead humans. b. dead plants. d. dead insects.

4. Different forms of fuel can be classified into two main types which are ..............and ...........

guess the emoje

2.

4. Gases emitted from burning fossil fuel always (clear) the air.

2. Wood is a form of( fossil fuel,) that can be used in houses

3. We can make liquid biofuel from wood chips and grass.

Put (✓) or (x) : 1. Wind energy will run out faster than natural gas.

4

2. The electric generator changes ..............energy into................ energy.

What happens if ... ? We use renewable resources of energy instead of fossil fuel. (according to Earth's temperature)

3. Using the ...................resources of energy is more expensive than using fossil fuel

what is the emoje ?