Answer: a light source (sun) and water
Explanation:
I would say D :) I hope i helped
Answer: When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. In some cases, gene mutations are so severe that they prevent an embryo from surviving until birth
Explanation:
Answer:
a ruler
Explanation:
I say A ruler because think how small a shoebox is a shoebox is not that big so you would measure it with a ruler
The respiratory usually develops at 12 weeks so i would definitely say breathing starts in this period.