Read the passage below.
Did you know that crocodiles tend to have longer, pointed, V-shaped snouts while alligators generally have wider, rounder, U-shaped snouts?
Answer:
The signal word “while” signals the difference between alligators and crocodiles.
Step-by-step explanation:
The word "while" is used to show a contrast or difference between two ideas or statements and in this case, it indicates the difference between the characteristics of crocodiles and alligators.