(A) a change in a developmental gene or in its regulation that altered that spatial organization
A hypothesis<span> is an idea that </span>can be tested<span> by an </span>experiment<span>-These ideas are based upon a person's </span>observations and<span> previous knowledge or experience. </span>
Animals- that have thick layer of blubber or fur
is the correct answer......
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The chance that a certain event will occur is known as its probability.
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-Payshence xoxo