Answer: Really hope this helps you.
Explanation: it depends in what you are using it for if you are using it for math then it means a relation from a set of inputs to a set of possible outputs where the input and the output is related exactly.
dude, you asked brainly the whole worksheet?? Do it yourself sreerag!!
This can be because of their genetics. The siblings may not have inherited their parents looks, but maybe they inherited their grandparents looks, or even their aunts looks. This is all due to genetics. It's sort of the same thing, when two caucasian parents have an african-american child. That would be because somewhere along the family tree someone was african-american.
Anyways, I hope this helps!