Answer:9:3:3:1
Explanation: Just took the test!
Answer:
O2 participates in cellular respiration
Explanation:
The only place that O2 participates in cellular respiration is at the end of the electron transport chain, as the final electron acceptor. Oxygen's high affinity for electrons ensures its success in this role.
E.coli because e coli is a bacteria.
Answer:
because they can donate blood to anyone
Explanation:
