What keeps earth’s core from melting? temperatures not high enough to reach the melting point radioactive elements breaking up constantly extreme high pressure from the weight of the layers of rock above it magnetic force from rotation of the core

The answer is " extreme high pressure from the weight of the layers of rock above it" I just did this one, and this one is correct!! In short, your answer is C! Hope I helped ya!

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

hope this   and an i get brainlsiest

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