NASA | Earth Science Week: The Ocean's Green Machines

The video explores the crucial role of phytoplankton in Earth's ecosystems, highlighting their contribution to oxygen production and carbon dioxide absorption. It discusses how scientists use satellites to monitor phytoplankton from space, providing insights into global changes. The impact of climate change on phytoplankton and the broader marine food web is examined, emphasizing the interconnectedness of Earth's systems and the importance of continued monitoring.

What is the primary role of phytoplankton in the marine ecosystem?

• They are a source of minerals for the ocean.

• They decompose organic matter.

• They are predators of small fish.

• They provide the base of the marine food web.

How do researchers track the global distribution of phytoplankton?

• By collecting water samples manually.

• By observing ocean color from space satellites.

• By deploying buoys in the ocean.

• By using underwater drones.

Why is it important to study phytoplankton from space?

• To measure their size and weight accurately.

• To track their migration patterns.

• To get a comprehensive view of their global distribution over time.

• To observe their behavior in deep ocean trenches.

What happens to phytoplankton levels as ocean temperatures rise?

• They tend to decrease.

• They fluctuate unpredictably.

• They remain stable.

• They increase significantly.

What is a consequence of reduced phytoplankton growth due to warming oceans?

• Enhanced nutrient flow to the surface.

• Disruption of the marine food web.

• Increased fish populations.

• Stabilization of ocean temperatures.

What is the effect of increased carbon dioxide on ocean chemistry?

• It makes the ocean water more alkaline.

• It increases the salinity of the ocean.

• It has no effect on ocean chemistry.

• It makes the ocean water more acidic.

How are Earth's systems described in relation to each other?

• They operate independently.

• They are identical.

• They are interconnected.

• They are unrelated.