Nagarjuna Sagar Dam was built across the Krishna River at Nagarjuna Sagar where the river is forming boundary between Nalgonda district of Telangana state and Guntur district of Andhra Pradesh state in India.

Balpakram is located in South Garo Hills district in Meghalaya, India. Balpakram is famous for its forest covered canyon-cum-gorge, which is now part of a National Park. The park also includes the Balpakram plateau and adjacent forests. The area lies in the southern part of Meghalaya.

Kota a city in Rajasthan is located on banks of river Chambal. Kota is the 3rd largest city of Rajasthan after Jaipur and Jodhpur and it is world’s seventh most densely populated city further it is a coaching hub for competitive exams.

Grasslands are known by many names. In Africa, they are named savannas. In the U.S. Midwest, they're known as prairies. In South America, they're called pampas. Central Eurasian grasslands are referred to as steppes. In Australia, they are known as downs.

The Zarwani Waterfall is deep inside the sanctuary.Shoolpaneshwar Wildlife Sanctuary is located in the districts of Narmadaand Nandurbar, respectively in the States of Gujaratand Maharashtra, India. This sanctuary has 607.70 km² area.

Waves attack vertical lines of weakness in the rock known as Faults. Processes such as hydraulic action and abrasion widen these faults into cracks and eventually the waves will penetrate deeply enough to create caves.

•  On around January 3rd, Earth is closest to sun and distance is around 147.5 million Kilometers. This is called Perihelion. 
•  On July 4th earth is Farthest from Sun and this is called Aphelion.Hence option C is the right answer.

Reforestation is the process of restoring a forest that once existed but was removed at some point of time in the past.

India has longest International border with Bangladesh of 4096 Km. It is the fifth longest border in the world. The second largest border of India is with China 3488 Km followed by Pakistan 3323 Km.

Madhya Pradesh does not share its border with Jharkhand. Jharkhand is a state in the eastern India. It was carved out of the southern part of Bihar. Jharkhand shares its border with the states of Bihar to the north, Uttar Pradesh and Chhattisgarh to the west, Odisha to the south, and West Bengal to the east.