Water or other molecules move down their concentration gradient without any energy.........
difference - simple diffusion uses help of transporting protein in the membrane whereas osmosis uses no help.
Any cells of the human body, except the cells of a placenta.
Answer:
We hear a lot about the amount of carbon in our atmosphere increasing, but the actual number of carbon atoms on our planet has not changed since the Earth first formed. It's just that more carbon is spending more time as gas.
Explanation:
Answer:
Mixtures can be separated using a variety of techniques. Chromatography involves solvent separation on a solid medium. ... Evaporation removes a liquid from a solution to leave a solid material. Filtration separates solids of different sizes.
