Question

List a few reasons why the oxygen level decreases in the cave.​

Answer 1

Answer:

But when it's colder outside, air rushes back out. “This is important because the quantity of oxygen that's introduced in the entrance of the cave can depend on the low or high atmospheric pressure and of the temperature outside,” Perez says, adding that climate change may contribute to reduced oxygen levels

Explanation:

this is the answer

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Answer 2

See the above attachment ✌️