Evolution and variety are the outcome of long-term interactions between organisms and their surroundings, as well as the repercussions of those interactions. Species adapt to their habitats through time, and the range of environments available encourages a diversity of organisms that have adapted to them.
Literal language means exactly what it says, while figurative language uses similes, metaphors, hyperbole, and personification to describe something often through comparison with something different. See the examples below. Literal Descriptions.