To take a whiff of your favorite food, you use both ___. a. sensory nerves and your respiratory system
b. motor nerves and your digestive system
c. sensory nerves and your immune system
d. motor nerves and your skeletal system

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.

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

All organisms contribute some water to the water cycle by conducting