The abiotic environment consists of non-living things. So, rocks, temperature and water are part of the abiotic environment.
Explanation:
Your heart muscle cells –
Answer: I think your punnett square is incorrect because it has 4 letters in one box. There must only be two letters in each box since your punnett square doesn't not contain four squares in a row or column.
Explanation:
It is perhaps Rr, Rr, Rr , and Rr again since they all start with a capital letter. The dominant allele takes over.