Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?

(N/A) In sexual reproduction,two individuals having different variations combine their $DNA$ to give rise to a new individual. Therefore,sexual reproduction allows more variations,whereas in asexual reproduction,chance variations can only occur when the copying of $DNA$ is not accurate.
Additionally,asexual reproduction allows for very few variations because if there are too many variations,the resultant $DNA$ may not be able to function within the inherited cellular apparatus.
However,in sexual reproduction,more variations are allowed and the resultant $DNA$ is able to survive,thus making the variations viable.
$Variation$ and $Evolution$: Variants help the species to survive in changing conditions. Environmental factors such as heat,light,pests,and food availability can change suddenly. At such times,only those variants resistant to these conditions are able to survive. This slowly leads to the evolution of a better-adapted species. Thus,variation plays a crucial role in the evolution of sexually reproducing organisms.