Which trait of particles causes even cold objects to have some thermal energy?
dopamine
equilibrium
non-numbers
constant random motion
Scientists think that multicellularity arose from cooperation between many organisms of the same species. The Colonial Theory proposes that this cooperation led to the development of a multicellular organism. Many examples of cooperation between organisms in nature have been observed. For example, a certain species of amoeba (a single-celled protist) groups together during times of food shortage and forms a colony that moves as one to a new location. Some of these amoebas then become slightly differentiated from each other. Volvox, shown in Figure above , is another example of a colonial organism. Most scientists accept that the Colonial theory explains how multicellular organisms evolved.