Answer:
oxygen, hydrogen peroxide and the halogens.
Explanation:
Nitrogen. Rocks have nitrogen in them. But just to be sure you should also just look it up to see if I am right.
50% of the offspring should be homozygous recessive
Answer:
Natural Is better
Explanation:
Natural Chemicals are produced by nature without any human intervention. Synthetic may or may not be found in nature
Answer:
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