Photosynthesis releases oxygen<span> into the atmosphere and cellular respiration uses the </span>oxygen<span> to </span>release energy from food<span>. The </span>process that releases energy from food molecules by producing ATP in the absence of oxygen<span>.</span>
Answer: Pathogen.
Explanation: Every part of the body needs to work together to protect itself from viruses, or pathogens.
A habit is where an organism can be located
Inner surface of the small intestine is not flat, but thrown into circular folds, which not only increase surface area, but aid in mixing the ingesta by acting as baffles. Villi: the mucosa forms multitudes of projections which protrude into the lumen and are covered with epithelial cells.
Huddling is the correct awnser