Asexual reproduction is the involvement of the single parent. During asexual reproduction, an offspring is the exact copy of their parent. Sexual reproduction is the involvement of two parents. During sexual reproduction, an offspring carry the half of the information from one parent and the half from another parent, which creates lots of variation in the offspring. Variations enable the offspring to survive in the changing environment. That's why sexual reproduction is considered to be superior in the comparison of asexual reproduction.