Answer: pro is one cell - archaebacteria, eubacteria
eukaryote is more than one - protista, fungi, plantae, animalia.
Explanation:
I would have to say A. ribosomes are known to break and release their digestive juices into the cell upon cell death. thus killing them
The answer is (b.) ecosystem. An ecosystem is all living organism in an area functioning together with nonliving factors of the environment. An Ecosystem is a community of the living organism that includes the producers, the consumers, and the decomposers.