Product differentiation: group of answer choices a. is successful if a firm faces a relatively inelastic demand curve. b. cannot be accomplished through advertising or trivial product changes. c. is carried out by both perfectly competitive and monopolistically competitive firms. d. if carried out successfully enables the firms to enjoy market power. e. does not allow the firm to raise its price without losing all of its customers.

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

answer; i believe the answer is (polygenic inheritance;

my answer is the prothallium.brainliest