Describe the zonation of a terrestrial or aquatic community, and discuss the factors that cause zonation to occur. Provide an example of zonation and describe at least two types of ecological processes that cause that zonation.

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.