The first of the two undeniable facts is that any localized population of a species has the potential to produce far more offspring than the local environment can support. this fact is important to understanding evolution because it means that

It seems that you have missed the necessary options for this statement to be complete, but anyway, here is the correct answer. The first of the two undeniable facts is that any localized population of a species has the potential to produce far more offspring than the local environment can support. this fact is important to understanding evolution because it means that the population will ultimately overwhelm its environment, causing the environment to collapse. Hope this answer helps.

Nimbostratus is the correct answer.
explanation: nimbostratus clouds are the type of clouds that are mostly likely present on gray, rainy day. these clouds produce continuous rain, snow and there is no thundering or lightening either.