The most observabledifference<span> is the way in which cytokinesis occurs. In </span>plants<span> a new cell wall is fashioned </span>between<span> the new daughter cells, while in </span>animal<span> cells the cell membrane constricts to pinch the parent cell into daughter cells.</span>
Answer:
When it stands the test of time and is supported by many experiments.
That would be the synthesis of body mass in a primary consumer (herbivore who eats the plant).
