Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. Besides, it is also an occasion to commemorate the signing of the Ramsar Convention on wetlands in 1971.

B. World Wetland Day is celebrated on 2 February to raise awareness about the critical importance of wetlands.

C. Unfortunately, these valuable wetlands are disappearing three times faster than the forest areas.

D. The Convention upholds the wetlands as the world's most economically valuable ecosystems.