The urea cycle also known as the o r n i t h i n e cycle is a cycle of biochemical reactions that produces you re a from ammonia this cycle occurs in u r e o t e l i c organisms
Answer is D hope it helped
A single undifferentiated cell. For example, in human, this was the embryo.
Aerobic metabolism<span> is the creation of energy through the combustion of carbohydrates, amino acids and fats in the presence of oxygen. The body burns sugars, fats, and proteins.</span>
