英语翻译Thispredictionwassupportedbydatacollectedinonesurveyof24speciesfromanArizonaforest,moreevidencethatpredatorpressurefavorstheevolutionofbeggingcallsthatarehardtodetectandpinpoint.moreevidencethat,这个th

Question

英语翻译
This prediction was supported by data collected in one survey of 24 species from an Arizona forest,more evidence that predator pressure favors the evolution of begging calls that are hard to detect and pinpoint.
more evidence that,这个that是定语从句吗,从句是predator pressure 还是predator pressure favors the evolution of begging calls.后面的that是修饰call的吗,是不是也是定语从句.
整个句子如何理解呢,是说：更多捕食者威胁的证据支持了祈求行为的演化,虽然这些演化是很难调查和定位的.
还是说：捕食者的威胁证据支持了祈求行为的演化是很难调查和定位的这个观点?

Answer 1

more evidence that predator pressure favors the evolution of begging calls...这个that后面引导的是同位语从句
that are hard to detect and pinpoint.这是the evolution的定语从句.
我的理解是：更多的证据表明,捕食压力是有利于乞讨的演化,这个演化是难以预测且难以定位的.