Please help me! which characteristic describes both the domain bacteria and the domain archaea?
A. Multicellular organisms only
B. Unicellular and multicellular organisms
C. Eukaryotic and prokaryotic cells
D. Prokaryotic cells only

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

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.