What is one way to know that speciation has occurred?

Speciation can be defined as the the evolutionary process by which a species gets converted into the distinct species. The evolution can be due to many reasons.

Speciation can be caused due to geographical isolation which means geography can be one of the reasons for the isolation and speciation of species.

Some other examples are behavioral isolation.

Explanation:

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

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the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.