Answer:
Cancer can ruin the lungs and cause death of lung tissue. If a lung is ruined, running would be out the picture and you would have enough oxygen to provide for your cells during exercise
In a closed ecological system, any waste products produced by one species must be used by at least one other species. If the purpose is to maintain a life form, such as a mouse or a human, waste products such as carbon dioxide, feces and urine must eventually be converted into oxygen, food, and water.
I am not sure but here is a link that should help :)
https://www.ncbi.nlm.nih.gov/pubmed/9971764
The leakiest capillaries, which allow large substances such as cells to cross the capillary walls are called sinusoidal capillaries.
Sinusoidal capillaries are a unique kind of capillaries that are wide in diameter. The diameter of a sinusoidal capillary is 30 to 40 nm.
Sinusoidal capillaries can be found in the liver, spleen, and bone marrow. In the spleen, sinusoidal capillaries help in the filtration of blood. They remove broken red blood cells, antigens and other pathogens remains in the blood.
Sinusoidal capillaries are known as leakiest capillaries because all other capillaries have a narrow diameter and do not allow the passing of large substances. Sinusoidal capillaries are the only ones with a large diameter that allows the passing of larger substances.
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The best soil for most plants for optimum growth is a rich, sandy loam. Loam is an even mixture of the three main types of soil. In most cases, you will need to amend your soil with compost.