Os fósseis são os registos que os paleontólogos utilizam para reconstituir a história da Terra. Explica a importância do estudo dos fósseis na reconstituição da história da Terra.

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

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

How did the work of farmers and breeders in england influence the work of charles darwin