Are there multiple theories of evolution?

Answer 1

No- only one. Darwin's Theory of Evolution:

•Natural Selection says that better qualities of a specie goes to the next generation and the species becomes better over time; the species that fitted the nature best; served to make new species through mutation and cross breeding.

Answer 2

There is one widely accepted theory of evolution, known as the theory of evolution by natural selection. This theory explains how species change over time through a process of genetic variation, natural selection, and adaptation to the environment. While there may be different interpretations or refinements of the theory, the underlying principles remain the same.