What is measurement of population per unit area the population density is measured in a population per unit area overcrowding is an example of

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.

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

What organ is the first to receive nutrients that have been absorbed from the digestive tract?