Three plants were tested under red, green and yellow light.  the growth of the plant was measured in centimeters. what is the independent variable?

What are two ways in which waves erode the land?

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.