Which of the following is an example of positive feedback? a. abscisic acid (aba) in plants slows bud growth in cold temperatures. b. an increase in ethylene gas causes fruits to ripen more quickly. c. taking a tranquilizer slows the speed of signal transmission in neurons. d. panting in dogs increases the amount of cool air in nasal passages and lowers body temperature

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

and after water is usually warmed by the sun the water temperature raises and then evaporates .