Which best describes the behavior of atoms in a solid substance that is melting into a liquid? O Atoms that once slid past one another now only vibrate in place.
O Atoms that once slid past one another now expand in all directions.
O Atoms that were once in fixed positions now slide past one another.
O Atoms that were once in fixed positions now spread freely in all directions

*will mark brainliest* which of the following best describes a viral infection, such as the common cold? a. virus grow and develop in the body. b. virus are living organisms. c. viruses require host cells in the body. d. viruses can be treated with antibiotics.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

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.