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Azygote becomes a mature adult through the process of: meiosis or mitosis

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?