Which statement is true about plant by-products? Food production and harvesting create a lot of by-products and waste.
Plant by-products can have a positive impact on the environment and are a source of potential profits.
Plant by-products and waste can contain compounds like ammonium, chloride, and sodium.
When by-product materials are not used, they may contribute to environmental rejuvenation.

it is a learned trait

explanation:

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

cell division is not regulated in tumor cells.