People often consider ancient humanity to have lived “in harmony with nature”. What does the discovery that people may have caused the extinction of megafauna even in prehistoric times mean for humanity’s role in nature? What bearing should that have as we seek to integrate modern humans more effectively into the natural world?

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

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