You discover a single-celled organism that does not have a nucleus, and you also notice that the culture is producing methane. in which group would you place this organism?

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?