How does energy usually flow in ecosystems? OA
from consumers through the Sun to producers
ОВ,
from producers through the Sun to consumers
OC.
from the Sun through producers to consumers
OD
from the Sun through consumers to producers

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.