Amphibians have internal fertilization that requires the presence of water. true or false

Explain the significance of thesaurus geographicus

Which hormone is used by both males and female?

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