The largest ecosystem in the world is the

What is the primary focus of oceanography?

Which of the following is a tool commonly used in oceanography to measure ocean depth?

What is the main cause of ocean tides?

Which ocean is the largest by surface area?

What is the term for the movement of water from the surface to the deep ocean?

Which gas is most abundant in the Earth's oceans?

What is the primary driver of ocean currents?

Which of the following is a major effect of ocean acidification?

What is the name of the process by which ocean water becomes saltier?

Which of the following is a method used to study the ocean floor?

What is the primary source of energy for ocean life?

Which oceanographic phenomenon is characterized by unusually warm ocean temperatures in the Equatorial Pacific?

What is the main component of oceanic crust?

Which of the following is a significant threat to marine biodiversity?

What is the term for the vertical movement of ocean water that brings nutrients to the surface?

Which of the following is a characteristic of the deep ocean?

What is the primary method by which oceanographers study ocean currents?

Which of the following is a consequence of global warming on oceans?

What is the term for the boundary where two oceanic plates meet?

Which of the following is a method used to measure the salinity of ocean water?

What is the primary cause of oceanic dead zones?

Which of the following is a type of marine ecosystem?

What is the term for the process by which ocean water absorbs carbon dioxide from the atmosphere?