Evolution
It means that new species descended from preexisting species, and species must be able to change over time.
Natural selection causes those organisms that are better suited to survive and reproduce to pass on their genes to future generations, causing their children to be better suited to their environment as well. Over time, these traits that have been selected by natural selection will result in an overall change in a species.
I believe you are referring to evolution, which occurs as a result of natural selection causing species to change into new species over time.
evolution
because it takes longer for a human to develop its advanced brain and organs than it takes for a bird to develop its stupid brain
wolves
evolution
Evolution
As they adapt to their environment, they slowly change over time. They are said to Evolve.
Natural selection, which is the mechanism for evolution.
Speciation is the process by which new biological species arise. It is part of the evolutionary process; how two or more populations of one species, when separated geographically, can gradually change over time in different ways, to become separate species.
Yes, but develop has several other meanings that include a degree of effort to effect the change process. Mature involves time and natural growth.