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What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?