Hakeem is testing the effects of sunlight on samples of soil. which of these actions would introduce confounding variables into hakeem's experiment?

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

Which example best describes a reflex action? a. eating food when hungry b. coughing when the throat is irritated c. bending down to lift a heavy object d. going for a walk outside