Question

in the distance was an ugly building with smoke blowing out of tall chimneys why has the building being referred to as being ugly​

Answer 1

Answer:

because the smoke which pollutes our earth is the source of that building.

Explanation:

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Answer 2

Answer:

subtraction is not commutative because switching arounds the number in the operations yields a different solution for ex the operations addition and multiplications are commutative because no matter what order you place the numbers you will always get the same sum