The breakdown of carbohydrates into glucose. Glucose use to obtain energy (ATP) for the human cellular respiration by the steps glycolysis, acetyl CoA and kreb cycle. In glycolysis, ATP is use to generate greater ATP called the ATP debt. Fat (lipid) and protein (amino acid) also can give human energy call gluconeogenesis but only when critical condition only.
Answer:
The answer is D.
Explanation:
Autotrophs are known as producers which gets energy from sunlight and produces their own food.
Well it helped the animals and humans grow the population.
It also reabsorbs water found in the undigested food