Of the options listed, we can confirm that the best evidence to support the claim that global warming has a long-term impact on the ecosystem is given by the phrase "Habitat loss would occur, leading to a decline in species diversity".
Therefore, given that the increased temperatures will cause habitat loss, this will lead to a sharp decrease in biodiversity, meaning possibly fewer producers or primary consumers to maintain a stable food chain. This can lead to the full collapse of an ecosystem.
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