Alexis and candace were testing different surfaces to see which one had the least friction. they predicted that the marble, seen above, would travel fastest down the ramp when the surface covering had the least friction. alexis and candace used rocks, plywood, and velcro to cover the ramp. they let the marble go, not pushing it, but letting gravity pull the marble to the bottom of the ramp.

what is/are the responding variable(s) in the experiment?

a) the different types of ramp coverings

b) how fast the marble moved down the ramp

c) ramp height, the marble, and using gravity

d) pushing or not pushing the marble down the ramp

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

b brown mice / white sand dunes

not too sure but maybe in the hot springs.

the answer would be..

b. sucking