But The skils af hunting, herding, and agriculture sustained the Na- tive Americ
ID: 396295 • Letter: B
Question
But The skils af hunting, herding, and agriculture sustained the Na- tive Americans 6 No comma before an indirect quotation The report concluded, that dieting could be more dangerous than overeating The report concluded that dieting could be more dangerous than overeating Not 39h But Exercise 39.5 Revising: Needless and misused commas Revise the following sentences to eliminate needless or mas. If a sentence is already correct as given, mark the number preced ing it. misused com- Example Aquifers can be recharged by rainfall, but, the process is slow Aquifers can be recharged by rainfall, but the process is slowExplanation / Answer
* - No change in the sentence
1. Underground aquifers are deep and sometimes broad layers of water that are trapped between layers of rock.
2.Porous rock or sediment holds the water.
3*. Deep wells drilled through the top layers of solid rock, produce a flow of water.
4. Such wells are sometimes called artesian wells.
5*. One of the largest aquifers in North America, the Ogallala aquifer, is named after the Ogallala Indian tribe, which once lived in the region and hunted buffalo there.
6. The Ogallala aquifer underlies a region from western Texas through northern Nebraska and has a huge capacity of fresh water that is contained in a layer of sand and gravel.
7. But the water in the Ogallala is being removed at a rate faster than it is being replaced.
8. Water is pumped from the aquifer for many purposes, such as drinking and other household use, industrial use and agricultural use.
9. Scientists estimate that at the present consumption rate, the Ogallala will be depleted in forty years.
10*. Water table levels are receding from six inches to three feet a year, the amount depending on location.
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