What determines how ocean currents move?

Patterns of surface currents are determined by wind direction, Coriolis forces from the Earth's rotation, and the position of landforms that interact with the currents. ... These currents move water masses through the deep ocean—taking nutrients, oxygen, and heat with them.

Explanation:

Ocean currents are the continuous, predictable, directional movement of seawater driven by gravity, wind (Coriolis Effect), and water density. Ocean water moves in two directions: horizontally and vertically. Horizontal movements are referred to as currents, while vertical changes are called upwellings or downwellings

gravity wind and water density or surface currents

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"record the time to complete a chemical reaction" would most likely be part of a lab procedure.