Which of the following DECREASE as you go deeper in the ocean? Check all that apply.

Question

1)temperature
2)pressure
3)sunlight
4)phytoplankton

Answer 1

As you go deeper in the ocean, the following decrease:

1. Temperature - Generally, temperature decreases with depth in the ocean.
2. Sunlight - Sunlight penetration decreases with depth; it can only reach a limited depth due to absorption and scattering.
3. Phytoplankton - Phytoplankton populations decrease with depth because they rely on sunlight for photosynthesis, which diminishes in deeper waters.

Pressure, on the other hand, increases with depth.

Therefore, the correct answers are 1) temperature, 3) sunlight, and 4) phytoplankton.