Changes in their habitat (the environment they live in) coupled with a species' possibility to gradually adapt to those changes. That is a very broad term and includes many different factors such as availability of food and water,presence of predators, climate, etc.
The polar bear is a good example as it is related to the normal brown bear. As the ancestors of the polar bear gradually moved to more northern habitats, natural selection made that it slowly but surely adapted to that habitat: thicker fur to withstand the colder temperatures, white coat as camouflage with which it stood a better change to hunt for prey, etc.
You use "diversify" as a verb.
The dying off of a certain species causes that species to become endangered (the low count of that species)
Diversify BPO was created in 2010.
when you want to diversify in a game you would spead out
During: Lots of screaming. After: Much, much less screaming.
The abstract noun forms of the verb to diversify are diversification and the gerund, diversifying.
To concentrate?
The theme that reflects the idea of gradual change in the characteristics of species over time is evolution. Evolution is the process by which species change and diversify over time due to genetic variation, natural selection, and other mechanisms. It explains how species adapt to their environment and how new species arise.
Adaptive Radiation pronounced(smeg-mah)
Both primary and secondary succession begin with pioneer species that are able to colonize and establish in harsh environments with little to no soil. These pioneer species play a crucial role in breaking down rock or creating soil, which paves the way for other plant species to gradually establish and diversify the ecosystem.
Global Warming.
Species evolve during adaptive radiation in order to exploit new ecological niches and resources that become available in their environment. This process allows them to diversify and adapt to different conditions, increasing their chances of survival and reproductive success.