In this video you will learn how weird and wonderful animals are formed in the process of speciation and the formation of new species.
Different selection pressures select for different characteristics. Over generations, the individuals with the beneficial traits will prosper, and others will die out. This results in a population all having these new traits.
Populations in a different area may have been faced with different selection pressures, and have evolved to have different traits. Over time, these two populations may no longer be able to mate. Once the populations are no longer able to interbreed and produce viable (fertile) offspring, they are now two separate species. This is known as speciation, and can be the result of environmental factors (such as different food types), or behavioural factors (such as a change in mating season or changes to their mating songs).
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