Answer:
(2) exchange food, oxygen, and waste between
mother and fetus
Explanation:
In most mammals like humans, the fetus produced as a result of the fertilization of the sperm and egg, develops in the uterus or womb of the female. However, this developing fetus cannot yet fend for what it requires for survival and is still dependent on the mother e.g nutrients, oxygen etc. How do this substances get to the fetus? Here comes the role of the PLACENTA.
Placenta is an organ in the uterus that serves as a connection between the mother and the fetus in her womb. The placenta enables the mother to pass digested nutrients to the fetus and exchange gases (oxygen and Carbondioxide) between them via the umbilical cord. The placenta also enables the mother remove waste produced by the fetus into her bloodstream.
Answer: unconformity
Explanation: I took the test.
Answer:
No. Since Model A shows an equinox, it shows that it is spring in one hemisphere and fall in the other hemisphere.
Explanation: exact answer on plato
The answer is <span>Without genetic diversity, natural selection cannot occur.
</span>In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. In order for natural selection to occur, the genetic diversity must be present within the population. That way, natural selection will have more "choices" so it can favor those variations t<span>hat will increase the chance of survival and reproduction.</span>
