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

Statement C best supports the role played by the hormone in regulation of homeostasis.

Homeostasis is the maintenance of the inner conditions of the cells and entire life forms, for example, temperature, water, and sugar levels. This keeps cells and creatures working at ideal levels in any event, when tested by inside and outer changes.

Among the role of hormones mentioned in the option, the role of hormone erythropoietin gives clear idea about the role of hormone during homeostasis process. The hormone erythropoietin increases the production of red blood cells when oxygen levels are low and thus maintains the condition required for the normal body function.

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explanation:

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answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.