The answer is <span>c. narrowing of the coronary arteries due to plaque build-up</span>
The process which is directly affected by the cardiovascular system is HEALING OF CUTS.
The human cardiovascular system is made up of the heart and the blood vessels. The heart is the major player in circulation as it is the one responsible for movement of blood round the whole body. Thus, either directly or indirectly, it affects all the processes that goes on in the body. The healing of cuts is directly affected by the cardiovascular system. Healing of cut occur in four stages and all these stages required different specific materials such as platelets, macrophages, etc that are located inside the blood. It is the responsibility of the heart to pump blood to the injured area and to delivered these needed particles to the wound site.
Answer:
See explanation
Explanation:
There is an equilibrium that exists between the carbon dioxide in the air and the carbon dioxide in the oceans. The temperature of the water affects its ability to hold carbon dioxide.
Hence, as the global temperature continues to rise and the water becomes warmer, its ability to hold carbon dioxide decreases. When this happens, the gas exchange across the air-ocean boundary is affected. There is now too much CO2 in the atmosphere owing to the disturbance of its air- ocean exchange equilibrium leading to more rise in temperature due to global warming.
Answer: Water covers 70% of the earth, so land covers 30%.
The factors are: The size of the sample, the extraction method, the method of purification and preservation of the DNA.
The quantity and quality of DNA can be greatly improved by performing PCR.
* Purification of nucleic acids is a key step for functional studies in biology. Because of the great diversity of living organisms in nature, purification becomes a real challenge for researchers, especially cell lysis.
The evolution of lysis methods has made it possible to improve efficiency, speed and simplicity. But, this lysis step remains a crucial step for the efficiency and the quality of the purification.
