Why We Owe Our Lives to Phytoplankton

What are phytoplankton primarily responsible for?

• Producing carbon dioxide

• Reshaping the planet’s atmosphere

• Increasing ocean temperature

• Killing marine life

Which of the following is NOT a type of phytoplankton mentioned in the video?

• Diatoms

• Coccolithophores

• Dinoflagellates

• Amphibians

What is the primary characteristic that defines phytoplankton?

• Tiny aquatic organisms that consume other organisms for food.

• Microscopic marine animals that swim using flagella.

• Tiny aquatic organisms that produce their own food through photosynthesis.

• Large marine plants that form the base of the ocean food web.

Which of the following are types of phytoplankton mentioned in the video?

• Cyanobacteria, Dinoflagellates, Diatoms, Coccolithophores

• Algae, Seaweed, Mollusks, Whales

• Zooplankton, Jellyfish, Coral, Anemones

• Fungi, Bacteria, Viruses, Protozoa

What role do phytoplankton play in the marine food web?

• They are at the top of the food chain

• They provide food for small fish

• They have no role

• They are predators

How much carbon dioxide do phytoplankton consume each year?

• 5 gigatons

• 11 gigatons

• 20 gigatons

• 50 gigatons

What significant roles do phytoplankton play in Earth's ecosystems?

• They are primary consumers in the marine food web and produce methane.

• They form the base of the marine food web and produce over half of the planet's oxygen.

• They are responsible for creating red tides and increasing ocean acidity.

• They primarily consume oxygen and are a food source for land animals.

What significant event did cyanobacteria contribute to in Earth's history?

• The Great Oxidation Event

• The mass extinction of dinosaurs

• The formation of the continents

• The creation of mountains

Why did the ocean become more stable due to the evolution of calcifying plankton?

• They increased ocean temperature

• They helped balance ocean chemistry

• They consumed marine life

• They produced less oxygen

How have phytoplankton historically influenced Earth's atmosphere and ocean chemistry?

• They caused the Great Oxidation Event by releasing large amounts of oxygen, and their shells helped buffer ocean pH.

• They were responsible for the formation of the White Cliffs of Dover and increased volcanic activity.

• They consumed all the methane and ammonia in the early atmosphere, making it breathable for humans.

• They led to the extinction of most marine life by making the oceans too acidic.