Answer:
You take any of the "signs of change in populations of organisms and their environments". For imagine, Australopithecus (early man) turning to Homo sapiens. In that way they could tell that you took this journey.
Answer:
xylem cell and phloem cell
It becomes positive because ATP synthase allows H+ ions to pass through the membrane .
Answer:
eukaryotic, because our body cells have nucleus and membrane-bound organelles
<span>which some organisms have learned to harness energy from sources other than the sun, including geothermal energy. That heat energy allows them to form energetic molecules of their own.</span>
