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aev [14]
3 years ago
12

Can someone explain question 4?

Biology
1 answer:
Alika [10]3 years ago
5 0
Over time, as oxygen levels decrease, CO2 levels increase. Respiration is correct as it uses oxygen as a reactant and releases CO2 as a byproduct.
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B.
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Challenger Deep

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Acidity in human sweat is an example of _____. Acidity in human sweat is an example of _____. acquired immunity adaptive immunit
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Acidity in human sweat is an example of<u> </u><u>innate immunity</u>

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This natural acidic nature of skin creates a hostile acidic environment to pathogens which prevents their entry into the body.

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Since the dog watches her leave and is sad realized that her grabbing the cat keys signals that she is leaving because it is one of the last things she does before she leaves

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yellow and orange...
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