Every day we use energy. We use it for cooking, for heating and for lighting our cities. The energy comes from many different
These fuels come from the remains of plants and animals. It takes millions of years
We need to have a strong sense of
What about turning off anything
Cars consume a lot of fuel, but there
Our warming planet is expected to face serious water crisis (危机) in the coming decades — which means each nation’s natural resource will be more important than ever. |
A.244,973 cubic kilometers | B.241 cubic kilometers |
C.3,642 cubic kilometers | D.6,122 cubic kilometers |
A.Guyana | B.Brazil |
C.Iceland | D.China |
A.Bhutan | B.Seychelles |
C.Canada | D.Suriname |