Explanation:

December 5
World Soil Day is celebrated every year on December 5, to highlight people’s attention to the importance of soil and its sustainable management. This year’s campaign is based on the theme of “Halt soil salinization, boost soil productivity”. It aims to raise awareness about the importance of maintaining healthy ecosystems and human well-being. The international observance was recommended by the International Union of Soil Sciences (IUSS) in 2002.