Bacterium // <span>Not all bacteria are solely </span>pathogens<span>.This one causes food poisioning and is also used for Botox injections.</span>
Answer:
Mitochondrian
Explanation:
The enzymatic reactions of cellular respiration begin in the cytoplasm, but most of the reactions occur in the mitochondria. Cellular respiration occurs in the double-membrane organelle called the mitochondrion.
Both process involve changes in energy and matter
1. Species vary over time
2. The fossil and the living species will have some similarities and some differences
I hope this gives you a clue.