Evidence which indicates that the earth rotates is the alternating of and

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. which of the following is not a constant or control for this experiment? a. the type of plant b. the amount of soil c. the amount of water d. the amount of time in the sun select the best answer from the choices provided a b c d

Which of the following is evidence to the past existence of glaciers?

Countries trade with each other because resources are not evenly distributed across the globe. true or false