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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)Plz answer correctly dont spam thank you ​

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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.

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

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