Which statement describes the best way to determine how different levels of light affect the growth of seedling plants? Choose three different light levels, and place four identical plants under each light level to observe the light’s effect on multiple plants.

Choose five different light levels, and place one identical plant under each of the light levels for exactly one week.

Choose four different light levels, and place eight different plant types under the light levels, two under each one, and observe them every day.

Choose one type of light and one type of plant, and then observe the plant for at least four weeks, measuring it each day.

ASAP

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant