Approximately 2 million years ago the genus australopithecus gave rise to a new genus, homo. today, we retain the genus as homo sapiens. what important fossil evidence most likely scientists change the classification of those early human ancestors?

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