Coral Reefs and Their Ecosystems

Coral reefs are vital ecosystems, home to diverse marine life. They face threats from coral bleaching, primarily caused by climate change and pollution. Bleaching weakens corals, leading to ecosystem collapse and affecting coastal communities. To save reefs, we must address climate change, reduce pollution, and support conservation efforts.

What makes coral reefs some of the most diverse ecosystems on Earth?

• They are made entirely of algae.

• They are located in deep ocean trenches.

• They are home to a wide variety of marine species.

• They are found only in tropical regions.

What happens to corals during a bleaching event?

• They become more colorful.

• They expel the algae living in their tissues.

• They grow faster.

• They change their location.

Which of the following is a primary cause of coral reef bleaching?

• Decreased salinity levels.

• Excessive sunlight.

• Increased fish population.

• Rising sea temperatures.

How does pollution contribute to coral bleaching?

• It increases the water temperature.

• It blocks sunlight needed by corals.

• It provides nutrients for coral growth.

• It reduces the salinity of the water.

What is one impact of coral bleaching on marine life?

• Marine life finds new habitats easily.

• Improved water quality.

• Increased fish population.

• Loss of food and shelter for marine species.

Why are coral reefs referred to as the 'rainforests of the sea'?

• They are made of trees.

• They receive a lot of rainfall.

• They have a high level of biodiversity.

• They are located in rainforests.

What is one benefit coral reefs provide to coastal communities?

• They reduce the number of fish.

• They support tourism and fishing industries.

• They provide no economic benefits.

• They increase the risk of storms.

What is the most important step to address coral bleaching?

• Ignoring the problem.

• Addressing climate change.

• Increasing fishing activities.

• Building more coral reefs.

Which action can help reduce the stress on coral reefs?

• Promoting unsustainable fishing.

• Ignoring environmental policies.

• Improving water quality.

• Increasing pollution levels.

What can individuals do to help protect coral reefs?

• Avoid renewable energy sources.

• Increase their carbon footprint.

• Support conservation efforts.

• Ignore environmental issues.