Examlex
Once groundwater is contaminated,it is very difficult to purify.Discuss this problem of groundwater sources of water with respect to the water cycle.
Exponent
A mathematical notation indicating the number of times a number is multiplied by itself.
Square
A geometric figure with four equal sides and four right angles, or the mathematical operation of multiplying a number by itself.
Calculate
To determine mathematically the amount or number of something.
Result
The outcome or consequence of an action, experiment, or process.
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