The definition of a force majeure is an overpowering force, or an unexpected or uncontrollable event. An example of a force majeure is an earthquake. 1  superior or overwhelming power.  an unanticipated or uncontrollable event or effect which releases one from fulfillment of a contractual obligation.
Algae can either be unicellular or multicellular. Seaweeds are examples of multicellular algae. On the other hand, protozoans are unicellular, and they are more animal-like. People describe protozoa as a blob without a definite shape since they lack a cell wall.
The third and fourth groups of protists, the algae, contain chloroplasts and photosynthesize like plants; these can be unicellular, colonial, or multicellular. Multicellular marine algae, the seaweeds, are similar to marine plants, and many biologists support moving seaweed into the plant kingdom.