Were there any extinction events that occurred during the Cambrian period?? Help !!!

Consider an organism that is eukaryotic, found in both unicellular and multicellular forms, may resemble a plant but is not photosynthetic, has chitin in its cell walls, and absorbs organic nutrients from decomposing material in the environment. this organism would be classified as which of the following types of organisms? a. fungib. protozoac. bacteriad. archaea

Which law represents a balanced chemical equation?

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement