What is always the last step in a food chain or food web?

How do antiviral drugs work? in your own words.

Which best describes carbon dioxide’s path out of the body

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