The answer is diffusion.
The most important mechanism that enables oxygen and carbon dioxide (but as well other small molecules such as glucose, amino acids, wastes) across capillary walls is diffusion. Diffusion is a net movement of molecules through some barrier from an area of high concentration to the area of low concentration. When blood rich in oxygen reaches capillaries close to the cell, now there <span>is </span>more oxygen in the capillaries than in the cells and by diffusion, oxygen will pass capillary walls and enter the cell. Since blood in capillaries lacks in carbon dioxide, it will easily leave the cells and enter the blood. It should be taken into consideration that capillary walls may be fenestrated, continuous, and discontinuous which can affect movement through them.
Answer:
the design of rabbit hutches is based on this system
Explanation:
it provides a mixture of grazing area and a solid floor for sleeping
Stage 1 which is the high fluctuating stage has both high birth rates and high death rates.
<h3>What is Famine?</h3>
This is a condition which is characterized by lack of food as a result of some factors such as war, natural disaster etc.
In the stage 1, the population growth is slow and fluctuating as a result of high incidences of disease and famine.
Read more about Famine here brainly.com/question/504689
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Kinda looks like a normal rock but with something on the bottom.