R-organisms reproduce at a very high rate. knowing this, why don’t they usually reach their carrying capacity?

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.