Focusing on the question in Pilgrim's restated context, the obvious answer is nobody knows. We have no proof or evidence to go on and only the incredible mind we are blessed with to consider possibilities.
There are those who suppose that all the stuff of the universe has always been there as there could not possibly have been a Creator for it, and yet nobody has yet determined exactly what causes living cells to divide and living things to grow. Does a 100-ft tree grown from a single seed remove as much stuff from the universe as it contributes?
There are those who say energy can neither be created nor destroyed and yet who can say for certain that every living cell, each a unit of energy itself, takes as much energy from the universe as it contributes? Can anybody say for certain that it does?.
There are those who point to the randomness observed in our physical environment and yet with equal confidence point to laws of science that are apparently consistent, universal, and not at all random. And they see no dichotomy in that.
And nobody has yet been able to explain through any science known to humankind how it is that our species is capable of caring about other species that it has never even seen or what love is or what makes something beautiful to behold or how there can be an end of space or time.
Way too many questions to answer the thesis of the thread.
A whole lot of possibilities though for those with open minds.