If a, b and c are positive integers such that 1a+1b+1c+12 = 1623, then what is the mean of a, b and c?
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What is a deep valley between cliffs often carved from the landscape by a river?
Canyon
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Which one of the following is the cause for a change in the season?
In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.
Extremely happy, peaceful, or picturesque
Plants that are more rare today are
Photorespiration lowers the efficiency of photosynthesis by
photorespiration lowers the efficiency of photosynthesis by removing ribulose bisphosphate molecules.
Many European empires arose in the wake of
The Earth's population has ________since the turn of the century
The population increases in geometrical progression and has crossed the 5 billion mark. The united nations estimate an average growth rate of 1.5% per annum.
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