15 An ecosystem that is not sustainable can break down when a natural
disaster occurs. This can lead to organisms in the ecosystem either
leaving the area or dying off. Increased biodiversity results in a more
sustainable ecosystem because-

it has one origin of replication, but it proceeds in two directions - d)

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the answer is: metamorphic rocks often show the presence of fossils, also a

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-lavira: )

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .