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.
The answer is absorbing dead or decaying organisms
Yes, when the egg and a sperm cell meet fertilization has taken place
<span>I think its made of food oxidation.</span>
The Earth is around 4.6 billion years old. Earth has a slightly squashed sphere, measuring 7,973 miles (12,756 km) in the diameter at the equator.