Answer:
In most tissues of the body, the response to hypoxia is vasodilation. By widening the blood vessels, the tissue allows greater perfusion. By contrast, in the lungs, the response to hypoxia is vasoconstriction.
Explanation:
I know the first two for the fill in:
1. I believe it's energy
2. Diaphragm
Multiple choice:
1. I believe it's 3, trachea
2. I think it's 3, respiration
There's quite a lot of questions, but I hope this helps :)
Answer:
Two European men and two Polynesian women settled on a previously uninhabited tropical island. All four of the settlers have brown eyes, a dominant trait, but one of the Europeans is heterozygous and carries the recessive gene for blue eyes. No new settlers arrive,and nobody leaves the island.After a few generations,the percentage of blue-eyed individuals increases from the original zero to 25 percent.This is probably due to which of the following factors?
genetic drift
Explanation:
Genetic drift entails when there are changes in the gene frequency which occur in a gene that is existing. From the analogy above, it is a known fact that only gneetic drift could allow such to happen as mutation will only occur with a sudden change of gene which is not the case described above
False, then the second one the answer is sweat glands
Answer:
A
Explanation:
The number of different species in a particular habitat is what is what makes up the biodiversity in such habitat. The more varied the species are, the higher the biodiversity.
There are factors that could lead to a decline in the biodiversity level of an habitat which is illustrated by the two graphs above. One of such factors is over exploration of a forest.
The graph shows that as consumption of lumber increases at a faster rate compared to how forest is replenished, the amount of lumber available for supply also reduces. As this goes on, biodiversity keeps declining.
In summary, we can say that:
"When forests are cut down faster than they can be replenished, biodiversity quickly decreases."
