La captura de carbono: el fitoplancton

Phytoplankton are crucial to the carbon cycle, absorbing CO2 and releasing oxygen. They face threats from pollution and warming, which disrupt nutrient supply. Urea can boost their growth but may harm ecosystems. Human intervention in nature poses dilemmas, as it may require ongoing management.

What role do phytoplankton play in the carbon cycle?

• They convert oxygen into carbon dioxide.

• They store carbon dioxide in their roots.

• They release carbon dioxide into the atmosphere.

• They absorb carbon dioxide and release oxygen.

What is one of the main challenges phytoplankton face due to global warming?

• Lack of nutrient mixing due to warmer surface waters.

• Decreased water temperature at the surface.

• Excessive sunlight exposure.

• Increased nutrient availability from deeper waters.

How can the growth of phytoplankton be artificially encouraged?

• By decreasing water salinity.

• By reducing sunlight exposure.

• By adding a nitrogen-rich substance like urea.

• By increasing water temperature.

What is a potential negative effect of excessive phytoplankton growth?

• Improved water clarity.

• Enhanced biodiversity in marine ecosystems.

• Increased oxygen levels in the water.

• Decreased oxygen levels, harming marine life.

What dilemma is posed by altering the growth of phytoplankton to combat climate change?

• It could result in irreversible changes requiring constant intervention.

• It may lead to a natural balance in ecosystems.

• It will definitely solve all climate change issues.

• It will have no impact on marine life.