What choice best describes a wind that is caused by a convection current? A: Warm air is more dense than cool air, so the warm air rises and cool air sinks and takes it's place creating wind.

B: Warm air is less dense than cool air, so the warm air rises and cool air sinks and takes it's place creating wind.

C: Cool air is more dense than warm air, so the cool air rises and warm air sinks and takes it's place creating wind.

D: Cool air is less dense than warm air, so the cool air rises and warm air sinks and takes it's place creating wind.

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

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.