What is an adaptation? What happens if the adaptation has a positive affect? PL HELP

An adaptation is an evolutionary process of a living species to live in its habitat or habitats and capable to reproduce. As the environment is not a permanent existence, the organisms have to keep adapting to the changing environment. Adaptation is a process which runs parallel to evolution. Today, if we see species like dinosaurs extinct, it is because they could not adapt to the changing environment. As we study evolution, we also notice the various stages man has been through before becoming the modern man. It is all a part of ecological adaptations.

Explanation:

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videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.