Question

How is Aleoveli design to maxemize exchange the gases. (5)
The is ozone layer is benificial to us but the ozene gas is harmful. How ? (5)


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Answer 1

The alveoli are thin-walled and richly supplied with a network of blood vessels to facilitate the exchange of gases between blood and the air-filled in alveoli. ... They have a balloon-like structure that provides maximum surface area for exchange of gases.

Explanation:

The is ozone layer is benificial to us but the ozene gas is harmful because it affects the life of people

Answer 2

Answer:

Stratospheric ozone is “good” because it protects living things from ultraviolet radiation from the sun. Ground-level ozone, the topic of this website, is “bad” because it can trigger a variety of health problems, particularly for children, the elderly, and people of all ages who have lung diseases such as asthma.Sep 10, 2020