Surface water always flows downhill. The answer is A.downhill
Fusion and fission are similar<span> in that </span>they<span> both release large amounts of energy. Nuclear </span>fusion<span> is a process in which two nuclei join to form a larger nucleus. Nuclear </span>fission<span> is a process in which a nucleus splits into two smaller nuclei.</span>
The conclusion that Torri produced is supported by evidence since she did not switch her dependent variable, giving the mouse a fair advantage of learning which knob to touch
Here is an article that can help.
https://healthblog.uofmhealth.org/heart-health/anatomy-of-a-human-heart