The nebular hypothesis suggests that our solar system evolved from a huge
rotating cloud
asteroid collision
volcanic eruption
star explosion

When should a bar graph be used? a. when there is no independent variable. b. when the independent variable is continuous and does not show a relationship to the dependent variable. c. when the independent variable is continuous and shows a causal link to the dependent variable. d. when the independent variable is composed of categories and does not show a relationship.

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

What type of cell is produced after fertilization occurs and the gametes combines ?