Ultraviolet Rays, Radio Waves, and Gamma Rays.
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I believe you may be referring to cold welding? This is when two pieces of metal are put together in a vacuum and are thus permanently "cold-welded" together
Answer:
Unbalanced
Explanation:
You need to have the same number of atoms on both sides for it to be balanced
Solar energy will not run out (unless the sun burns out), but the supply of fossil fuels we use is slowly depleting. Burning fossil fuel also releases greenhouse gas into the air, which is bad for the atmosphere.
Can you attach the following concept map on chemical reactions?
