Would evolution by natural selection be able to happen If there was NO overproduction in a species population? Why or why not?

No, evolution by natural selection be able to happen If there was no overproduction in a species population.

Explanation:

In the continuous process of nature's selection the organisms which become the best are adjusted to their environment. The best one survives and pass their traits to the next generation. Overproduction occurs whenever the living things produces more offspring that have capability of surviving which leads to struggle for survival. When an organism overproduces only the most adapted are able to survive because of natural selection.

It would be difficult for the natural selection to happen as the population decreases because greater the variety of traits in a population greater is their chance of survival by natural selection.

Explanation:

The natural selection process requires four factors, these are overproduction, heredity, variation in adaptations and variations in their characters.

There are chances in small or isolated populations some random changes might happen which can affect the whole population so natural selection will not happen in this condition whole population will get polarised according to the change positive or negative whatever.