Answer:
-50 m
Step-by-step explanation:
The greater the number is, the lower it is if it has the negative sign. Since they are both negative numbers, the one with a greater number will be deeper (since it's lower) while the one with lower number is shallower (since it's higher than the other). In this case, -50 is shallower than -55 since [ -50 > -55 ].
I hope this helps.
