Answer:
[ANSWER]
Explanation:
When a molecule moves down its concentration gradient is it participating in passive transport; moving up the concentration gradient requires energy making it active transport.
It would be the muscles because their contracting and forcing the blood back to the heart
<h2>Yo WaSsuPp!! ^v0!!</h2>
Feeling dum.b rn so Umh… what does it mean for the moon to have a Revolution?
<h3> Lol no need to feel dum.b XD, everyone has trouble sometimes.</h3>
Revolution: the movement of an object in a circular or elliptical course around another or about an axis or center.
<h3>The moon having a revolution means that the moon is circling around the earth!!</h3><h3> I apologize if i'm wrong// You're welcome if i' correct!</h3>
((-Side Note-)): If you don't mind if this answer is correct can you give me brainliest? thank you ^v^!
<h3> Have a great day ^v^" </h3>
The Dorsal Spines give the fish, "3 Spined Stickleback", because they have hard, spines on their backs. I hope this helps!!!
Among the pre-historic species associated with the LA BERA TA PITS are pleitocene ,dire wolves ,short faced bears, ground sloths, and the stste fossil of california, the saber-toothed cap..... i hope it will help you.... :)
