I would NOT support an incineration facility in my neighborhood. Incineration of solid waste introduces toxic fumes into the atmosphere that may cause harm to the health of people due to pollution. Additionally, the activity causes the release of greenhouse gases such as carbon dioxide that contribute to global warming.
C. by observing them in their habitats
Ex: The Galapagos Islands. Darwin went their to study the flora and fauna in their natural habitat.
The difference between a multicellular organism and a colonial organism is that colonial organism consists of individual one-celled organisms that can, if separated, survive on their own. On the other hand, cells from a multicellular life-form cannot live independently (they are all connected to function together).
Volvox is not considered multicellular because its cells are not aggregated into organized tissues and have no organ and organ systems.