Match the definitions with the energy kinds.
a) hydroelectric 1.comes from moving turbines or mills
b) solar energy 2.oil , gas , coal which ontribute global warming while burning
c) nuclear 3.comes from flowing water in rivers, waterfalls and streams
d) wind 4.comes from the sun and can be saved using panels
e) geothermal 5.comes from splitting toms, and produces dangerous waste
Fill in the gaps with the words from the box
a) population b)live c)farmland d)sources e) gradually f)demand
1.For the thousands of years, the population of the world increased...
2.By the year 2050, researchers predict that the ... of the world will be 9.1 billion.
3.We don't know how people will choose to ... in the future.
4.Today, ... for fresh water is greater han before.
5.It is very important to increase the amount of ...
6.We have many different ... of energy.

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