List three features of alveoli which enable them to perform their function
Why does breathing become faster when we do physical exercise
How does Amoeba acquire oxygen from its surroundings?
Why do farmers turn the soil in their fields?
Answers
Answer:
1..... Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they're microscopic, alveoli are the workhorses of your respiratory system.
2... When you are doing increased physical activity, such as cycling, running or climbing, your breathing becomes faster. As well as bringing oxygen into the body more quickly, this speeds up the process of getting rid of carbon dioxide. Your brain sends out instructions to your body to increase the rate of respiration.
3.... Amoeba gets oxygen gas dissolved in surrounding water through its plasma membrane by the process of diffusion. The oxygen gas diffused inside the body is used up by amoeba. In the body the oxygen gas absorbed is used to break down the complex food material into simple molecules.
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