For proper formation of teeth, __________ is essential?

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What causes the Moon’s phases?

A. The Sun lights up only one half of the Moon and as the Moon orbits the Earth we can sometimes see the unlit side of the Moon. B. The Sun lights up only one half of the Moon and as the Sun orbits the Earth we can sometimes see the unlit side of the … What causes the Moon’s phases?Read More...

“Each electron in an atom must have its own unique set of quantum numbers” is a statement of_______________?

A. Aufbau principle B. Pauli exclusion principle C. Hund’s rule D. Periodic law...

The ‘stone’ formed in human kidney consist mostly of_____________?

A. Calcium oxalate B. Sodium acetate C. Magnesium sulphate D. Calcium...

Oranges are rich source of____________?

A. Carbohydrates B. Fats C. Proteins D. Vitamins...

Montreal Protocol 1987 was__________?

A. Treaty among nations to reduce nuclear arsenals B. Climate control treaty C. Treaty to protect ozone layer D. Trade policy about tarrifs...