Which of the following best explains the potential health problems associated with endocrine disruptors? a. Endocrine disruptors mimic hormones that regulate critical biological processes. b. Endocrine disruptors encompass a wide array of toxic pesticides. c. Endocrine disruptors do not biodegrade, remaining toxic years after their release. d. There are no major health problems associated with exposure to endocrine disruptors.

The number of living organisms in a particular area is

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.

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the: