Ais a factor in an experiment that can be manipulated.

correlation.

variable.

placebo.

constant.

What does all of the organ system in a human form

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

What is the importantence of the carbon and nitretan cycles in the environment