Indian subcontinent was part of Gondwanaland. Australia, Africa, South America, Medagascar were also its part. The division of Pangaea was occurred in two large parts one is called Angaraland and other Gondwanaland. The Current scenario of the world came after the bifurcation of these two lands.

Standard meridian of India is 82.5 E longitude which passes through Mirzapur near Allahabad. It is 5:30 hours ahead of Greenwich Mean Time (GMT).

Barkhan: Barkhans are found between high and low hills. Sometimes they get scattered here and there too. In the Sahara desert, there is also a way to move between the barkhans, which are known as Ghasi and Caravan. Their shape is also half-moon shaped and arched. When the direction of the wind changes, the position of the cloud also changes. Their size is up to 100 miles long and up to 600 feet high. The one in front of Barkhan. The slope is gentle and the opposite slope is concave.

1. Sikkim Which state of India has banned the use of chemical fertilizers for sustainable agriculture?

2. As a general philosophy, adopting sustainable agriculture means practicing agriculture without polluting the environment (soil, air, water), and without depleting any natural resources and destroying the ecosystem and biodiversity through your actions. Can produce adequate yield in a particular crop, without interruption.