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vredina [299]
3 years ago
12

Why is it so difficult to get to the heart during open heart surgery?

Biology
1 answer:
drek231 [11]3 years ago
6 0
This is because it has many parts, arteries, and tubes that pass blood around the body. It is hard because it has many parts which are difficult to be cut open. Hope I helped!
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The kidneys can have a direct influence on ___________, by pushing hydrogen ions and bicarbonate into and out of urine.
solniwko [45]
The kidneys can have a direct influence on blood pH, by pushing hydrogen ions and bicarbonate into and out of urine.
<span>Regulation of blood pH or acid-base homeostasis is maintained by kidneys. Kidneys regulate pH by excreting hydrogen ions (H</span>⁺<span>) into the urine and reabsorbing bicarbonate (HCO3</span>⁻<span>) from the urine. <span>Acidosis (low blood pH) causes more bicarbonate to be reabsorbed and in response to alkalosis (high blood pH) kidneys excrete more bicarbonate.</span></span>
3 0
4 years ago
Read 2 more answers
if the atmosphere is 21% oxygen and the cornea contains 15% oxygen, which direction will more of the oxygen molecules travel: in
Mkey [24]
According to simple diffusion. Molecules travel from high concentration to low. So it would be traveling into the cornea
5 0
3 years ago
What is genetic drift?View Available Hint(s)What is genetic drift?The physical splitting of a habitatThe motion of continental p
sergejj [24]

Answer: A change in allele frequencies caused by random events

Explanation :<u>Genetic drift refers to a process which occur due to sampling error from preceding generations that lead to a change in allele frequency by chance alone within a population.</u> It is a random process which  leads to large significant changes within a population over a short period of time. The rapid changes are due to increasing inbreeding coefficient s and homozygosity from the removal of alleles.

It is peculiar to a population which is synonymous with regular cycle of extinction and recolonization. Therefore, together with evolution, mutation and migration, <u>it is one of the driving mechanism of EVOLUTION.</u>

It is caused by;  

Static or recurring small population sizes,  

"Bottlenecks” form of population, that is drastic reduction in population size;

Repopulation from a small number of individual-FOUNDER EVENTS.

<u>Measurements of Genetic Drift </u>

The magnitude of genetic drift within a population depends on the effective population size for the population.This is represented as Ne.  It is a theoretical number use to quantify the number of genetically distinct individuals that contribute gametes  

4 0
3 years ago
Which data would be best analyzed and communicated using a histogram
Vlad [161]
A diagram consisting of rectangles whose are is proportional to the frequency of a variable and whose width is equal to the class interval
6 0
3 years ago
Today, prairie ranchers and farmers raise:
Tems11 [23]

Answer:

sheep, cattle, and pigs

Explanation:

From sheep, cattle, and pigs, the most raised animal on the farms today is beef cattle. The reason why cattle is the first choice is its profitability. The cattle are easy to maintain, they just need good pasture and freshwater, some supplemental food during the winter, and enough space.

7 0
3 years ago
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