Answer: water
Explanation: Water is everywhere and required to survive, so water would be the most abundant compound.
If you are adding something to the water the concentration of water would drop, as it would start off as 100% water but then with the addition of another substance it would change that from 100% free to x% free, due to the water dissolving the substance.
Option 1 seems to be correct
Answer:
Since albinism is an autosomal recessive trait, it means that both parents must possess the gene for it, for the albinism to occur.
Thus, David could be the father if both Rose and David are carriers(heterozygotes) for the albino allele.
Answer:
Mutation is yes a harmful
Explanation: