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HELP WITH MARINE SCIENCE HOMEWORK?
1. explain why extremely unstable environments tend to have relatively low biodiversity,give examples including coral reefs(stable and not extreme),sand on a reef slope(unstable)and hydrothermal vents(extreme)
2. Give examples of organisms that occupy specialized and general ecological niches,including coral-eating butterfly fish and tuna
3.Explain why habitats with high biodiversity tend to contain narrow ecological niches

Having some problem Biology question?
1. A student is examining a large, multicellular plant which he believes to represent an entirely new division. The organism produces no pollen or seeds. A cross-section through what appears to be the stem reveals no xylem or phloem tissue. No organs are present. Some specimens have cells that are all haploid; others are composed entirely of diploid cells. The organism cannoth possibly be a(n):
A. Fern D. Vascular plant
B. Alga E. Member of an undiscovered division
C. Moss
2. A child notices two houseflies on the table. One is twice as large as the other. The child asks: “if we feed it plenty of sugars, how long will it take the little fly to grow as big as the big one?”
3.Why are arthropods small?
A. They are the most numerous organisms on the earth.
B. They reproduce rapidly
C. They have exoskeletons
D. Arthropods are a source of food for many other animals
E. They have to fill many ecological niches.
please explain your answer after selecting one of the following. thank you so much

the science behind animal breeding

A. decreased competition between two species leads to increased niche specialization. B. character displacmement is evidence of competition and resource partitioning. C. no tw species can occupy the same ecological niche at the same time. D. adjacent ecological niches lead to the elimination of one of the niches.