Phytoplankton and Ocean Health

The video explores Earth's oceans, emphasizing the critical role of phytoplankton in the marine ecosystem. Phytoplankton contribute to oxygen production and act as a carbon sink. Researchers use satellites to monitor these microscopic plants, as they respond quickly to environmental changes. Climate change impacts phytoplankton levels, affecting the marine food web and ocean chemistry. The video highlights the interconnectedness of Earth's systems and the importance of continued research.

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

• They decompose organic matter.

• They form the base of the marine food web.

• They are a source of freshwater.

• They are predators of small fish.

How do phytoplankton contribute to the Earth's oxygen supply?

• By consuming oxygen during respiration.

• By converting oxygen into carbon dioxide.

• By producing oxygen through photosynthesis.

• By storing oxygen in their cells.

Why are satellites used to study phytoplankton?

• They can capture detailed images of individual phytoplankton.

• They provide a global perspective on phytoplankton distribution.

• They are cheaper than using ships.

• They can measure the temperature of phytoplankton.

What is the main reason for studying phytoplankton from space?

• To measure their size and shape.

• To understand their role in the food web.

• To observe their color changes.

• To monitor their global distribution and changes.

What happens to phytoplankton levels when ocean temperatures rise?

• Phytoplankton levels tend to decrease.

• Phytoplankton levels remain unchanged.

• Phytoplankton levels increase significantly.

• Phytoplankton levels fluctuate randomly.

What is a significant consequence of reduced phytoplankton levels?

• Increased fish populations.

• Enhanced coral growth.

• Improved water clarity.

• Decreased marine biodiversity.

What is the effect of warmer surface waters on nutrient mixing?

• It enhances nutrient mixing.

• It has no effect on nutrient mixing.

• It reverses nutrient mixing.

• It inhibits nutrient mixing.

How does increased carbon dioxide in the atmosphere affect the ocean?

• It increases the ocean's acidity.

• It has no effect on the ocean.

• It makes the ocean water more alkaline.

• It decreases the ocean's temperature.

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

• They are interconnected.

• They are independent of each other.

• They are unrelated.

• They are in constant conflict.

What is a critical reason for tracking changes in the ocean from space?

• To predict weather patterns.

• To understand the health of the planet.

• To locate new fishing areas.

• To measure ocean depth.