Those chemicals absorbs heat from the surrounding while reacting
Answer: Scientists who study evolution may want to know whether two present-day species are closely related. Evidence for evolution can be structural, genetic, or bio geographical. Fossil skeletons of horse relatives dating from various time periods. ... of fossils and living species may tell us how modern organisms evolved. so D
Explanation:
A. Oxygen
You add oxygen to glucose to complete the steps
The energy is changed to a different form