You put sand in the furnace
Ketones are produced when body fat is burned for the production of energy. Normally, ketones should be present in very low amounts, the sample. If Marissa had to lose weight, then she must be following a ketogenic diet, which means less carbs in the diet and more fat and proteins, so that fat-burning state is achieved in the body. This diet also suppresses hunger. It is apparent that the nurse observed fewer ketones in the sample of Marissa, and got to know that she had been eating carbs and hence, was cheating on her diet.
Answer:
They use sexual reproduction.
Explanation: