Question 1:
Can any source of energy be pollution-free? Why or why not?
Answer:
No source of energy can be pollution-free. It is considered that solar cells are
pollution- free. However, even their making causes environmental damage
indirectly.
Also, in the case of nuclear energy, there is no waste produced after the fusion
reactions. However, it is not totally pollution-free. To start the fusion reactions,
approximately 107 K temperature is required, which is provided by fission reactions.
The wastes released from fission reactions are very hazardous. Hence, no source
of energy is pollution-free.
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