Somebody my with my bio study guide !

The development of plant and animal life in an area without topsoil; the development of biotic communities in a previously uninhabited and barren habitat with little or no soil.
Examples of where primary succession may take place include the formation of new islands, on new volcanic rock, and on land formed from glacial retreats. In primary succession, the initial conditions are often times very harsh, with little or no soil present.

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Since a female is both xx chromosome and the male passes down the x chromosome, than the offspring would be female since a female is xx.