The magnificent Great Barrier Reef is the world's largest coral reef system, stretching for over 2,300 kilometers along the coast of Australia. This natural wonder is home to thousands of species of marine life, including colorful fish, sea turtles, and various types of coral.

The reef's biodiversity is truly remarkable, with scientists estimating that it contains over 1,500 species of fish and 400 types of coral. The reef's ecosystem is incredibly delicate, and even small changes in water temperature or quality can have significant impacts on its health.

Climate change poses a serious threat to the Great Barrier Reef. Rising ocean temperatures have led to coral bleaching events, where corals expel the algae that give them their color and provide them with energy. Without these algae, the corals become vulnerable to disease and may eventually die.

Conservation efforts are ongoing to protect this priceless natural treasure. Scientists, environmentalists, and local communities are working together to monitor the reef's health and implement measures to reduce the impact of climate change and other threats.

Comprehension Questions

1. What is the main topic of the passage?

The Great Barrier Reef and its conservation
Marine life in Australia
Climate change effects
Coral reef tourism

2. What is coral bleaching?

A natural process of coral growth
When corals expel their algae due to temperature changes
A method of coral conservation
A type of coral disease

3. What is the main threat to the Great Barrier Reef mentioned in the passage?

Overfishing
Pollution
Climate change
Tourism
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