Biological hypotheses include ecological changes brought about by the evolution of cooperation between insects and flowering plants or of bottom-feeding predators in the oceans.

生物学上的假设包括生态变化，这些变化是由昆虫和开花植物之间的共同进化，或海洋中以海底生物为食的捕食者的进化所带来的。

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And perhaps even these become impossible to preserve due to the accelerating pace of man-made ecological changes.

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Dr Jon Lovett, who led the work at York University, said ecological changes would predominantly influence pandas to decide where to live.

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Bennett has logged time with Reinhard in the mountains of Greece and Peru, and has traveled to the Galapagos Islands to help evolutionary theorist Frank Sulloway record ecological changes there.

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