Which characteristics of archaea enables them to survive in extreme environments?

The characteristic of Archaea that enables them to survive in extreme environments is Their ability to survive on other sources of energy if the required resources are not present. 

Archaea can survive without oxygen. They use hydrogen, sulfur, and other chemical to survive in the event that oxygen is absent in the environment.

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.