An artificial reef has been built from old tires. how could this artificial reef actually be more harmful to the environment than beneficial? as the tires broke down, they released potentially harmful chemicals into the water. as smaller animals moved in, they attracted much larger predators. such a large pile limits the reproductive success of many invertebrates. sediment would settle on the tires and prevent algae growth.

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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