Diffusion across the alveoli
It provides the energy for photosynthesis due to the fact the plant needs to have energy to make food
<span>When a virus enters the cell of a human body it can start hosting inside the cell and reproduce itself. A virus can easily affect the body at the same time the immune system would activate to fight the viruses. Medication is needed to prevent it from spreading and worsen.</span>
Answer:
It might be A but I'm not fully sure.
Explanation:
