Answer:
Radiation and mutations can cause changes in the DNA but there arent substances. Ribonucleic acids can cause errors if they match with the wrong acid.
Answer:
A lion panting after a chase is the best example of an organism maintaining homeostatic
Explanation:
Maybe this can help.
In bread making (or special yeasted cakes), the yeast organisms expel carbon dioxide as they feed off of sugars. As the dough rises and proofs, carbon dioxide is formed; this is why the dough volume increases.
Uracil is only found in the Ribonucleic acid RNA.