Answer:
The right answer to this question is: bacteria and archea
Step-by-step explanation:
Both these organisms can be found in extreme environments and biomes. The reason to that is their capacity of adapting themselves to selective pressure. Let's think of bacteria as an example. When we are ill due to a bacteria we normally take medicine, more specific, antibiotics. These antibiotics have different causes to bacterias, it depends on the antibiotic, but its main function is to kill this bacteria.
When doctors recommend you to take antibiotics, they stablish a specific time to it, and this happens just because bacterias can adapt pretty fast, and if you don't maintain the concentration constant, they can adapt to the antibiotic. This can work to the environment too, they can adapt to new environments very fast, such as vulcanic biomes for example.