Although not nutrients, are commonly found in fruits, vegetables, and whole grains and are beneficial to human health

The correct answer in the space provided is phytochemical. This is considered to be biological active compound that are usually found in plants in which produces protective health benefits because of the properties that it contains and exhibits that benefits plants the most.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

the answer would be   10%