The phenomenon whereby some organisms with certain features get established in an environment is known...

Explanation

The question is asking about the term used to describe when some organisms with certain features become established in an environment. This phenomenon is called natural selection. Natural selection is a process where organisms that are better adapted to their environment have a greater chance of survival and passing on their traits to their offspring. These adaptations can be physical characteristics, behaviors, or even genetic mutations. It is important to note that natural selection is a key mechanism of evolution. Over time, as organisms continue to adapt to their environment, they may evolve into new species. This process can take millions of years and is influenced by many factors such as changes in the environment and genetic variation within a population. Artificial selection, on the other hand, is when humans intentionally breed plants or animals for specific traits, such as larger fruits or a certain coat color. Partial selection is not a term used in biology and mutation refers to a change in the genetic material of an organism. In summary, the correct answer to this question is natural selection, which is the process whereby organisms that are better adapted to their environment have a greater chance of survival and passing on their traits to their offspring.