Answer: B - mosses and lichens that can grow on Rocky surfaces
Explanation: Primary succession usually starts or begins on rock outcrops. It could include bare surfaces, volcanic mountains or an area (water surfaces) with no soil.
In primary succession, pioneer organisms including algae, lichen, mosses and fungi usually are the pioneer species. Other abiotic factors like wind and water play roles of normalizing the habitat.
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The type of polymer that is made by bonding an alkene to one or more alkanes or alkenes is called addition polymer
Addition polymers are those whose polymerization reaction doesn't produce low molecular mass compounds but the bonding of molecules one after the other. Such a reaction implies that there is a rupture in the bonding between monomers (the building blocks of the polymer) to allow the formation of a chain.
Bonding an alkene to one or more alkanes or alkenes is an example of an addition polymerization.
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The remains of a Hadrosaur are an example of a fossil typically structures like bones shells and teeth fossilized more often then things like tissues or plant leaves.
Answer:
Approximately, 50,000 types of Phylum Protozoa have been identified. Its four divisions are Amoeboid Protozoa or Sarcodines, Flagellated protozoans or Zooflagellates, Ciliated protozoa or Ciliates and the Sporozoans.
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Birds, unlike mammals, do not have separate exits for urine and feces. Both waste products are eliminated simultaneously through the cloaca. While mammals excrete nitrogenous wastes mostly in the form of urea, birds convert it to uric acid or guanine, which reduces water loss in comparison.