This diagram shows that there are high tides on the side of Earth closest to the moon and on the side opposite the moon, and low tides in the areas in-between. The moon’s gravity is one cause of the high tides. What causes the low tides?

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.

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity