Final answer:
Nuclear power is a non-renewable energy source because it relies on limited uranium reserves. However, it's possible to create elements in laboratory conditions through nuclear physics, notably in particle accelerators.
Step-by-step explanation:
Yes, nuclear power is a non-renewable source of energy but matter (elements) can be created. Nuclear power relies on uranium, which is a finite resource. While current reserves of uranium are adequate to last until about the year 2100 at current rates of consumption, it is not renewable in the sense that it can be replenished within a human timescale like wind or solar energy.
In terms of matter creation, in the field of nuclear physics, elements can be created in particle accelerators where smaller nuclei are fused to form heavier elements. However, this process is not applicable for energy production purposes and does not influence the classification of nuclear energy as non-renewable.