Step-by-step explanation:
National wealth is the pride and glory of a nation. So It is everyone's duty to protect and promote them. At present condition of national wealth is deteriorating. Roads and playgrounds have been encroached. Rubbish is being thrown. all over the road, and the water has been mixed with chemicals and drainage. Rotten things and other goods have been thrown in temples and their surroundings.
Similarly the lands are getting barren due to deforestation.
Due to overuse of chemicals, the natural fertility of the land is getting lost. Illegal factories that use the sand of rivers and streams are increasing that in turn is increasing the environmental degradation.
Among the nine World Heritage sites six of them lie in the Kathmandu Valley. But, modern concrete buildings are being rapidly built by affecting the historical monuments.
The World Heritage Committee has warned the government to protect the sites otherwise they will be stripped out of the World Heritage Sites