Final answer:
Fahrenheit and Celsius are the temperature scales that can have negative numbers, unlike Kelvin, which is an absolute scale starting at 0 K (absolute zero).
Step-by-step explanation:
The temperature scales that can have negative numbers are Fahrenheit and Celsius. The Kelvin scale, which is commonly used in science as the official SI temperature scale, is an absolute temperature scale that starts at absolute zero (0 K) and thus does not have negative numbers. In contrast, the Fahrenheit and Celsius scales are relative temperature scales. The Celsius scale sets the freezing point of water at 0°C and can go below this point, reflecting negative temperatures. The Fahrenheit scale designates the freezing point of water at 32°F and also can register temperatures below zero.