When amino acids are used for energy, they can still be utilized for building muscle tissue. A. True
B. False

False.

Explanation:

It is false because the energy source of the body are carbohydrates and lipids. Carbohydrates and lipids supply energy to the body to perform biological activities and amino acids link to form protein and are the building blocks of the body which make up to about 75% of the body.

Amino acids can provide energy at 4Kcal/g which obtained by partial degradation of muscle protein and can not be use for building muscles at the same time because it is not stored in the body.

for a different answer set the answer would be because the oxygen in the water had depleted (apex)