You didn't attach the problem. Without it, I can't help you. Sorry.
Answer:
Phenotype: Brown Eyes, blond hair.
Genotype: a Aa, TT
Explanation:
Phenotypes are visible traits.
Genotypes are non-visible.
Answer:
It is B: provides for the tight regulation of all physiological variables
Explanation:
Trust me on that one.
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Homeostasis:
In biology, homeostasis is the state of steady internal, physical, and chemical conditions maintained by living systems. This is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance, being kept within certain pre-set limits.
Answer:
number 4! every answer choice is correct :)
