Final answer:
The scuba diver's net change in depth after descending 80 feet and then an additional 120 feet below sea level is 200 feet.
Step-by-step explanation:
The student asked: "A scuba diver descends 80 feet below sea level and then descends another 120 feet. What is the diver's net change in depth?"
To calculate the net change in depth, we simply add the two descents together since they are in the same direction (further below sea level):
- First descent: 80 feet
- Second descent: 120 feet
The net change in depth is the sum of these two descents: 80 feet + 120 feet = 200 feet. So, the diver's net change in depth is 200 feet below sea level.