Answer:
Cells are the basic units of structure and make up tissues.
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The correct answer is (d.) proteins. Higher organisms use nitrogen to make their protein. Food that is containing protein also involves nitrogen in it. Protein also has amino acids that contain nitrogen in it which is a necessary essential nutrient for the body.
D. The umbilicus is caudal to the chin
The terms caudal and inferior are synonymous, meaning "away from the head end or toward the lower part of a structure or the body; below." The umbilicus is caudal (inferior) to the chin.
Answer:Homozygous reccesive
Explanation: