Iodised salts contains the iodine salts of which metal?

A. Iodine
B. Potassium
C. Sodium chloride
D. Chlorine

Tocopherol is the chemical name of which vitamin?

A. Vitamin c
B. Vitamin d
C. Vitamin a
D. Vitamin e

Which term describes the emission of light by a living organism?

A. Natural light
B. Bioluminescence
C. Illumination
D. Mimicry

What prevents the earth’s atmosphere from drifting away into space?

A. Gravity
B. Ozone layer
C. Troposphere
D. Ecosystem

What melted rock eventually becomes lava?

A. Iron
B. Metals
C. Magma
D. Coal

What natural phenomena are measured by the Richter Scale?

A. Volcanoes
B. Typhoons
C. Earth quacks
D. Tsunami

How many time zones are there in the world?

A. 22
B. 12
C. 16
D. 24

The study of the weather is called____________?

A. Meteorology
B. Weatherology
C. Ecology
D. Geology

The lowest region of the earth’s atmosphere comes between the earth and stratosphere. what is this region’s name?

A. Ionosphere
B. Troposphere
C. Stratosphere
D. Mesosphere

The outermost layer of the Earth is called ____________?

A. Crust
B. Mental
C. Core
D. None of these