World Wetlands Day is observed on 2 February every year. It is a day to celebrate the importance of wetlands and to raise awareness about the threats they face. Wetlands are areas of land that are saturated with water, either permanently or seasonally. They include swamps, marshes, bogs, and fens. Wetlands play a vital role in the environment, providing habitat for wildlife, filtering water, and storing carbon. They are also important for recreation and education. However, wetlands are under threat from human activities such as development, agriculture, and pollution. World Wetlands Day is an opportunity to learn more about wetlands and to take action to protect them.
Option A is incorrect because 11 December is the International Mountain Day.
Option B is incorrect because 9 October is the International Day of the Girl Child.
Option C is incorrect because 21 March is the World Water Day.
Option D is incorrect because 2 February is World Wetlands Day.