Match the following:
kidney, heart, stomach, liver: organ?
amoeba, paramecium, euglena: cellular?
colonial organisms: organism?
respiratory, digestive: system?
groups of cells performing a common function: tissue?
body systems working together for the good of the whole: organism?
muscle, fat, bone: system?
organs grouped to perform a common process: system?
tissues arranged into units to perform a function: organ?
algae, frog, rabbit: system?