A scientist found a new species in a rain forest. The species was small and green in color. She examined one of its many cells and found that the cell had a nucleus but no cell wall.To which kingdom does this species most likely belong?

The cell has a nucleus, so it is not a bacterium, and it has no cell wall, which is a key feature of animal cells. The question also says the species has many cells, consistent with animals. Green color alone does not make it a plant; plant cells have cell walls. So the best choice is animals, because it is multicellular with no cell wall.

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