A barchan is an example of ___________?

[A] A Rock
[B] A Dune
[C] An erg
[D] Sand sea

Which results from an increase in the greenhouse effect?

(a) Continental shifts

(b) Wildfires

(c) Volcanic eruptions

(d) Global warming

Which one of the following is the coldest place in India? 

(a) Srinagar (b) Dras

(C) Gulmarg (d) Pahalgam. 

Which of these events occurred earliest in the history of earth?

(a) Evolution  of animals

(b) Oxygen formation

(c) Colonization of land 

(d) First human