The gradual evolution for the family Equidae (horse family) has been well documented within the fossil record.
no, the scope on it blocks out natural light
The answer is survival
This is the ceasing of the existence of any particular species. ... A condition in which two populations of the same species, over time, can no longer breed with each other to produce live offspring. Survival. This is the set of skills and abilities necessary for an organism to live. If you’re looking for a one word answer, it’s survival.