What is an experiment with a controlled and uncontrolled variable and what are they?

What maintain homeostasis when a persons internal body temperature is 97.5°f

Ascientist is examinin the cell is disrupted when she damages one specific type of macromolecule g the function of macromolecules in a cell she notices that movenent of large molecules into and out of

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary