Which of the following are examples of metamorphic rocks?

The name of the volcanic rock which often forms the root of fold mountains is called

Which of the following is the most important weathering process in Karst regions?

Which of the following mass wasting process results in curved tree trunks and leaning telegraphy poles?

Which of the following are circular depressions formed on the bed of a river in its upper course by pebbles carried by the river?