I think the answers are 1) Hox genes
2)B But I'm not sure
Total magnification is 600x
Multiply the two magnifications together (40 times 15)
ddhdhdhfhfjfjjfjfjfjfjfjcjcjcjxjc
The answer would be the second choice, "Central Nervous System"
The best answer to the question 'What are the nonliving components of the environment that shape an ecosystem?' would be letter d. Abiotic factors are those components of the environment that are non-living or does not have life. All the other choices have life.