Each horizontal row in a pedigree chart represents a mating. a generation. several siblings. several characteristics.

The zone, which exists from a depth of 0 to 600 feet, is home to the majority of ocean life.

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. which most likely affects the development of these traits? testes ovaries prostate gland vulva

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