3 3. As Ensatina populations spread into new habitats the populations evolved. Explain how evolutionary
changes in ONE of the following aspects of salamander biology might contribute to speciation: mating
rituals, preferred habitat type, or reproductive physiology.
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Which type of respiration takes place when there is no oxygen present

How does the nervous system affect the excretory system?

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.