Can any source of energy be pollution-free? Why or why not?
Yes , no source of energy can be pollution-free. They might cause adverse effects on the environment to some extent. 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.
Match the words of Column (A) with that of Column (B)
Column (A) | Column (B) |
---|---|
(a) Phloem |
(i) Excretion |
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Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 4 , Question 1: Can any source of energy be pollution-free? Why or why not?....
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