Why must cells reproduce?

HELP PLZZ :((

The body of water found at number 4 on the map above is the

Where are the strongest jet streams located?

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow