since he memorized 15, he has only 10 left. so it should be 10/25
Thanks i learnt something new
It’s definitely b
hope this helps
Viruses need to be inside a living thing (of course the living thing has to have the right temperature which most living things do) . When they're inside a living thing they start injecting the host's cells with its DNA in order to make more copies of itself which allows the virus to spread. So basically viruses need to be inside something living.
