A PLANT ECOLOGIST PROPSED THE FOOWING HYPOTHESIS TO EXPLAIN

请问这个句子的IT的成分?
An ecologist who studies a pond today may well find it relatively unchanged in a year’s time.
It请问是宾语对吗?那后面的relatively unchanged in a year’s time.又怎么理解,是什么成分?

您好，像您请教个英语语法问题。
Ecologists are especially interested to know what factors contribute to the resilience of communities because climax communities all over the world are being severely damaged or destroyed by human activities. 这里 being 是什么作用呢？已经是被动了吧。 一直不理解being的含义 请您帮助解答谢谢~~

The ecologists urged measures _______ to protect the wildlife. A．would be made B．would be taken C．be taken D．be made

英语翻译
The task for ecologist is to untangle the enviromental and biological factors that hold this intrinsic capaicity for population growth in check over the long run.
environmental不好意思，少打了个字母。