1.
1. Fill in the gaps using the given words. Each word can be used only once:
сoal, invention, wood, source, consumption, fossil, oil, fuel, energy
1. We still use fire, or combustion, but, … doesn't have enough energy to power today's coolest inventions.
2. … fuels which contain much more … than wood, got everyone fired up with new possibilities.
3. Fossil fuels are currently the world's primary energy … .
4. Two fossil fuels, and …, provide most of the daily energy that heats our homes, powers our cars, and generates our electricity.
5. Since the late 18th century we have increased our … of fossil fuels.
6. With the … of steam engines, the demand for coal skyrocketed.
7. Our … needs for transportation and heat, drive oil exploration in the harshest corners of the planet.