Go for A also give brainlyest need to lv up
I think it is light so B) light
Answer:
cellular respiration
Explanation:
Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
Fossils give information about the time period in which organisms lived in the past.
