Answer:
The pressure differences on either side of the valve.
Explanation:
The heart valves open and close passively because of pressure differences on either side of the valve. When pressure is greater behind the valve, the leaflets are blown open and the blood flows through the valve. However, when pressure is greater in front of the valve, the leaflets snap shut and blood flow is stopped.
Hope this helps!
have a blessed day
Answer:
The wind's cooling effect comes from the wind evaporating moisture away
Explanation:
Answer:
The wrong statement is C. <em>Individuals with Type Il survivorship exhibit high survivorship throughout
</em>
their life cycle.
Explanation:
Different species have survival curves differently shaped. In general terms, there are three different survival curves.
- Type I. Organisms do not tend to die when they are young or middle-aged, but they do when they are old. These species, in general, have a few descendants and parents provide much parental care to ensure their progeny survival. Typical of K selected species.
- Type II. Organisms that have more or less the same probabilities of dying in each age interval. These organisms can also have a few descendants and they can provide significant parental care.
- Type III. Only a few individuals survive their first period of life or their firsts years. However, the lucky ones to reach a certain age generally have a long life. These organisms have a lot of descendants at the same time, but they do not provide much parental care. Typical of r selected species.
Answer:
https://en.m.wikipedia.org/wiki/Water_resources
can't upload the image though...
Answer: I think your punnett square is incorrect because it has 4 letters in one box. There must only be two letters in each box since your punnett square doesn't not contain four squares in a row or column.
Explanation:
It is perhaps Rr, Rr, Rr , and Rr again since they all start with a capital letter. The dominant allele takes over.
