The question is Not “How was nature able to "understand" or "determine" what a living being needed”.
Nature until modern men understands nothing.
The question is “by what process that would naturally operate with or without living beings that living beings were brought into existence, and adjust their needs to live on what is available in nature”, and a subtler question is “to what degree and by what process living beings, once arisen and became part of nature, allowed nature to better provide for the needs of other living beings like themselves”
Nature until modern men understands nothing.
The question is “by what process that would naturally operate with or without living beings that living beings were brought into existence, and adjust their needs to live on what is available in nature”, and a subtler question is “to what degree and by what process living beings, once arisen and became part of nature, allowed nature to better provide for the needs of other living beings like themselves”