The model shows the cycling of carbon which part of the model shows carbon moving from the biosphere to the atmosphere a. waste materials coming from the sheep b. the tree absorbing carbon dioxide c. the death of the bird d. the sheep eating grass

a: the sheep and waste material both release carbon into the atmosphere.

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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the dark variety, as they are not visible on the dark tree barks

explanation: