Question

Which two temperatures have a sum of 0 degrees Celsius?

2 degrees Celsius and −2 degrees Celsius
2 degrees Celsius and 2 degrees Celsius
−2 degrees Celsius and −2 degrees Celsius
2 degrees Celsius and 0 degrees Celsius

Answer 1

The answer is 2 degrees Celsius and −2 degrees Celsius

because

2 + -2 = 0

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Answer 2

-2 degrees Celsius and -2 degrees celcius