The individuality of an organism is determined by the A. sequence of nitrogenous bases in deoxyribonucleic acid
B. number of amino acids in a cell
C. position of the ribosomes on the endoplasmic reticulum
D. number of nitrogenous bases in a codon

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

i think its both a and b