when populations become separated from one another
B.
when one population becomes extinct
C.
when one population cannot interbreed with the other population
D.
when populations compete for the same resources
Answer:
Prenatal development
Explanation:
Prenatal development is the phase of growth and development in which a single-celled zygote grows into an embryo followed by the fetus and then a baby in the womb of a lady.
The process of prenatal development is very complicated which is divided into three phases:
1. Germinal phase: during the first two weeks after the conception in which the single-celled zygote develops.
2. Embryonic period: during which the zygote grows into the embryo and lasts from the second week to the eighth week.
3. Fetal period: During which the embryo grows to form a fetus which matures into a baby and is born.
Thus, Prenatal development is the correct answer.
Answer:
Prenatal.
Explanation:
The sexual reproduction may be defined the process of fusion of the male sperm and female ovum that leads to the formation of the zygote. Zygote is diploid in nature.
The prenatal development includes all the stages that are involved in the development of the single cell till the completion of the nine months of the fetus. The development of all organs and the process of the cell specification all occurs in the prenatal development stage.
Thus, the answer is prenatal.
the sequence of chemical reactions in photosynthesis is correct
Answer:
natural selection
Explanation:
Answer:
natural selection
Explanation:
the slower, weaker deer get taken by the wolf, thus leaving the healthier faster ones that can outrun it. the healthy big strong deer has the muscle and stamina to be able to outrun the wolf. However even though the prey animals have the advantage of stamina and living in herds over most of there prey, the predator animals are smarter and are capable of stalking the prey, and in the case of a wolf pack, they are able to out smart the prey by setting up a trap to catch there prey. although wolves also have very high stamina compared to most predators, lots of times it comes down to who gets tired first.