Which trait of particles causes even cold objects to have some thermal energy?

• Correct Answer: constant random motion
• kinetic energy
• equilibrium
• momentum

Explanation: 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.

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