Los humanos en la Tierra – ¿Sabías que?

The video discusses the impact of pollution on marine reefs, highlighting that nearly a quarter of all marine species depend on these ecosystems. It explains how artificial reefs, which are man-made structures, can support the growth of damaged corals by providing a surface for small coral pieces to attach and grow. Over time, these artificial reefs become new habitats for marine life, aiding in the restoration of marine ecosystems.

What fraction of marine species rely on reefs for their habitat?

• 1/4

• 1/3

• 1/5

• 1/2

What is a major threat to the survival of natural reefs?

• Overfishing

• Climate change

• Pollution

• Tourism

What are artificial reefs primarily made for?

• To attract tourists

• To support coral growth

• To prevent erosion

• To increase fish population

How do artificial reefs help damaged corals?

• By attracting more fish

• By reducing water pollution

• By increasing water temperature

• By providing a surface for coral pieces

What happens to coral pieces placed on artificial reefs over time?

• They die

• They dissolve

• They change color

• They colonize the reef