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A. niches and habitats
B. competition
C. biotic and abiotic factors

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

In a forest community, a shelf fungus and a slug live on the side of a decaying tree trunk. The fungus digests and absorbs materials from the tree, while the slug eats algae growing on the outside of the trunk. These organisms do not compete with one another because they occupy…
1. different habitat and niche
2.same niche, different habitat
3. same habitat, different niche
4. same habitat and niche

I have to do a AP Bio project on an ecosystem, in this case a beach. The problem is, I am having a hard time finding essential information (species of fungi, plants and animals present, temperatures, habitats, niches, for beaches close to where I live. The closest one that I found was Point Reyes National Park. Ideas and corresponding websites would be very helpful, since I need this information ASAP.