Answer:the valves prevents the backward flow of blood
Explanation:
The answer to 15 is no because the jaws box skips pass the hagfish
Answer:
Antibiotics cannot kill viruses because bacteria and viruses have different methods to survive and replicate. Viruses replicate via inserting their DNA into a host cell.
Explanation:
I know things.
2. Process to test hypotheses
I don’t know the second part, but algae growth will increase as a result of the fire
