Question

D. Fill in the blanks.
1. Coal, petroleum and natural gas are minerals of.........
origin.
2. The ............
..... cells convert sunlight directly into electricity.
3. 20 per cent of the world's electricity comes from .....
....... power.
4. The best quality of coal with 90 per cent carbon is ........
5. Two-third of the world's supply of petroleum is found in the .......
region and surrounding areas.
6.
is obtained by mixing copper and tin.



Please tell the answer as fast as you can​

Answer 1

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Answer 2

Answer:

1. non-renewable source
2. photovoltaic cell
3. wind energy
4. anthracite
5. sea
6. bronze

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