The thickness of earth Crust is about ?

Answer: Option D

Explanation:

Diameter of moon is 3475 km and its circumference is 10864 km.

Answer: Option A

Explanation:

Big Bang theory explains explains origin of universe. It was formulated and proposed by the Belgian astronomer and cosmologist "Georges Lemaitre".

Answer: Option B

Explanation:

India and Pakistan have boundary named Radcliffe Line,

Germany and Poland have boundary named "Hindenberg Line",

USA and Canada have boundary named 49th Parallel.

Note : India and China have boundary named Mac Mahon Line.

Answer: Option D

Explanation:

Nitrogen - 78 %
Oxygen - 21 %
Argon - 0.93%
Carbon dioxide - 0.03%

Answer: Option C

Explanation:

Deserts of North America are : Chihuahuan, Colorado, Mujave, Sonoran.

Deserts of South America are : Atacama, Pantagonia.