While performing strenuous exercise, a person may experience a temporary shortage of oxygen. As a result, anaerobic respiration supplies the required energy.
What is an end product that will build up in the person's muscles?

A. ethyl alcohol
B. glucose
C. lactic acid
D. pyruvate

C. lactic acid

Explanation:

"Lactic acid" build-up in the muscles occur when a person does an "anaerobic exercise," specifically high-intensity ones. Due to lack of oxygen going to the muscles (temporary), "glycolysis" occurs. This means that glucose will be used in order to provide the energy needed. This process produces lactic acid as an end-product. This makes the muscles "sore," thus, it is important to have rests per week in order to eliminate lactic acid.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.