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A species is the largest group of organisms that have similar characteristics and breed with each other. So it is normally a type of animal or living thing, some examples are humans, bears, lions, deer, and even grass. Genetic diversity is the max amount of difference 2 organisms in the same species can have. So humans have a big amount of genetic difference because there are many things that can be different when comparing 2 humans, their hair length, hair color, skin color, height, freckles, dimples, and etc. Those are just some examples of genetic diversity. Biologic evolution occurs from the natural selection because an organism wants to thrive in its environment and live. Evolution normally happens when a species comes to a new type of environment or the environment or habitat they were living in changes and has different abiotic factors. Due to this, animals start to adapt to the conditions through evolution. One example of evolution is humans, humans used to be exactly like monkeys, due to their environment being around grasslands, the monkeys couldn't travel well, over time the monkeys evolved and got taller, then they could see over the grasslands and navigate through their environment. This is a really good example to show how through natural selections organisms evolve and adapt to their environments. Mutations are when a certain type of species starts to have changes in their DNA which start to change their body or mind, sometimes it can change everything, these changes cannot be reverted like if a species were to mutate and start to have an extra leg that cannot be reverted, that animal forever would have that extra leg. So when these mutations start to occur over all the population of the organism, it becomes an evolution, which means almost all types of the type of species have that mutation.
Explanation:
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