They are both ectothermic, but fish have gills, and reptiles have lungs.
I believe the answer is protein synthesis.
Answer: Uterus
Explanation:
A fertilized egg is called ZYGOTE, and it is the product of fusion between a sperm cell and ovum cell.
The zygote is attached and housed in a muscular organ known as Uterus, commonly referred to as Womb. Here, the zygote grows and develops for several weeks into a foetus and then a human child (baby) in the pregnant woman
Gradualism is a pattern of evolution in which a species evolves at a slow, steady space. The correct answer is C.
I believe the thyroid controls most, if not all of those things. (Again, I'm not entirely sure.)