A football player running down the field gets energy by cellular respiration
photosynthesis
lactic acid fermentation
alcoholic fermentation

cellular respiration

Explanation:

occurs within the mitochondria of cells to release the chemical energy in food.it involves reactions inside the cells between oxygen and glucose food. During respiration, energy (that you use for your daily activities) is released and carbon dioxide and water are formed as by-products

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

the answer to your question is tooth decay.