The process of respiration system would not function well if the lungs was made up of only one big alveoli.
<u>Explanation:</u>
The main role of alveoli is to help the lungs to breath, for ventilation, diffusion and perfusion. The process of respiration system would not function well if the lungs was made up of only one big alveoli.
Alveoli are tiny to help the flow of oxygen and carbon dioxide, it helps the oxygen flow into the lungs and remove the carbon dioxide. If the alveoli is just one and big, then it would be hard to flow the oxygen through lungs and remove the carbon dioxide.
Therefore, it is good to have many tiny alveoli than one big one or the rib cage that protect the lungs could go through some damages.
Answer:
the cell membrane is the semi-permeable protective cover that keeps the cell held together. the cytoplasm is semi-fluid within the cell membrane that keeps the cell in shape.
Explanation:
These are the factors that determine a nation's human development index (HDI):
1. Average life and health expectancy
2. Education- literacy rates, and ratio of students who are enrolled in primary, secondary and tertiary levels
3. Individual income- a person’s income against the gross domestic product (GDP)
The example of a nonpoint source of freshwater is the first option: <span>pesticide runoff from farm fields. This is one of the most common nonpoint source of poullution</span>
Answer:
<h2>
<em>photosynthesis</em></h2>
<em>in</em><em> </em><em>this</em><em> </em><em>process plants use carbon dioxide</em><em />
