Answer: When the oxygen-rich blood gets to the cells, the cells receive the oxygen and release the carbon dioxide. The blood with less oxygen and a lot of carbon dioxide returns to the heart. Then the heart returns this blood to the lungs where carbon dioxide is released and oxygen is received.
Explanation:
Sedimentary would be your answer. Sediment is the matter that settles to the bottom of a liquid, so as rocks, dirt and mud settled over the dead body it would fossilize inside the sedimentary rock.
I’m not sure what level science this is but I believe the answer is (b) the person was sick from a virus and developed innate immunity
Answer:
The prezygotic barrier that is, the barrier to the flow of gene prior to the formation of the zygote or prior to the process of fertilization in the given case is behavioral. As it is the behavior of the female birds, who want to mate only with the males of their own species.
While the post-zygotic barrier, that is, barrier after fertilization in the given case would have been the hybrid inviability. As all the hybrids born were males, which signifies that the female zygotes are inviable and did not survive post-fertilization.
false I think, but I don't know for sure
