Question

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

Answer 1

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

Step-by-step 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.