Consider the aquatic phosphorus cycle. phosphorus is the limiting nutrient for aquatic organisms. decomposition naturally returns phosphorus to the aquatic cycle, but phosphates from fertilizers, sewage and detergents can cause pollution in lakes and streams. over-enrichment of phosphate in freshwater can lead to which, when they die and decay, leads to a) a lower ph; acidification b) algal blooms; eutrophication c) turbidity; decreased photosynthesis d) increased decomposition; poor growing conditions

The answer is B, algal bloom; eutrophication

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.

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