Answer:
1. Two to decompose
Explanation:
It's going to be a decomposition so you can eliminate answers 3 and 4. It is a decomposition because it is splitting apart. Then you can figure out that it is going to be two instead of four by balancing the equation
H2O2 → 2H2O + O2

Answer:
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D. The Moon is the Earth's largest natural satellite.
There you go!
Answer:
Nuclear
Explanation:
Nuclear produces more energy than chemical.