Breathing hard after exercise is a biological response controlled by negative feedback mechanism. This response is triggered by levels of carbon dioxide and blood pH levels

This response is triggered by levels of carbon dioxide and acidic blood PH levels

Explanation:

The body has spent a lot od oxygen and the blood PH needs to get back to it's normal state so the response is to breathe harder to get more oxygen back.

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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