Concerned about the exposure of children to chlorine, staff running a public pool measure the exact concentration of the chlorine currently in the pool water
However, assuming the amount of water in the pool is unchanging, to accurately determine the dose of chlorine exposure, the staff must also know ________.
A) why each child is in the pool B) the manufacturer of the chlorine
C) how long each child is in the pool D) the age of each child in the pool
C
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A third of the word's population lives in East Asia
Indicate whether the statement is true or false.
What type of river channel is characterized by multiple channels and gravel bars?
A) meandering B) riffling C) pooling D) braided
Consumption important internationally because it constitutes the bulk of economic activity of most countries
Indicate whether the statement is true or false
The soil-water budget it best used for which scale of analysis?
A) global B) local C) regional D) continental E) on any scale: continental to local