Human beings use __ liters of pure oxygen per day.
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✅ Correct answer: B. 550
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Places where the temperature of air is below freezing point of the water, the precipitation will be in the form of _____ ?
✅ B. Snow
The biggest planet in our solar system is______?
✅ C. Jupiter
It is a secondary plant nutrient?
✅ C. Sulphur
Which one of the following represents a chemical change____?
✅ B. Sublimation of iodine
Sunlight is made of_____colours?
✅
Most of the ozone in the atmosphere is concentrated in the ________?
✅ C. Stratosphere
A clouding that develops in the lens of the eye or in its envelope obstructing the passage of light is known as___?
✅ C. Cataract
The photo-receptors in the eye are present in______?
✅ A. Retina
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