The cyclic flow of chemical elements between organism and environment in biosphere is known as -

In which type of geological formation are gorges most commonly developed?

Which of the following types of landslides involves backward rotation of the slipping material?

The scale used for measuring earthquake intensity is ___________.

The solid portion of the earth on which we live is called the:

In dry areas, salts forming a hard soil layer are called:

Mediterranean wild shrubs are in which climate zone?

Which of the following is a metamorphic rock?

In which of the following atmospheric layers do Meteorites burn up on entering from space?