C i think . Hope this helps
Cell membranes are not solid structures.
The majority of the Earth's rare earth minerals are found in China, with 97 percent of rare earth trade concentrated in China.
<span>These minerals are called "rare" because thy have unique chemical properties that make them essential for wide-ranging technologies.Some of the arre minerasl are </span><span>aeschynite, allanite, apatite, bastnäsite, britholite, <span>brockite..</span></span>
