The correct answers are validity; reliability.
Answer 1: <span>The ability of a test to measure what is purports to measure is called validity.</span> Validity is defined as the ability of a test or study to actually to measure what it claims to measure. For instance, if a test aims to measure a population sample's heart rate, but ends up measuring blood sugar levels instead, it does not have validity, since it did not measure what it claimed or set out to measure. <span>
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Answer 2: Reliability refers<span> to the consistency of test results.</span> Reliability can be defines as the ability of a test or measure to consistently produce the same results at different, times, settings or locations. If the same test or measure produces different outcomes or results at different times or locations, it is low in reliability.
I think that statement is true.
There are indeed many sources of air pollutants in both urban and rural settings.
In urban settings, the most common sources of air pollutants came from vehicle's emission.
Meanwhile, in rural settings, the most common pollutants came from mining process or factory waste.
The used there engineering skills to control water flow to bring fresh water in
The correct answer is - fertile soil.
The Great European Plain, also referred to as the Russian Plain, is dominated by lowlands, naturally covered with dense grasses, and is known for its fertile soil. Most of the soil in this large plain is has very rich and deep upper, humus layer. The reason for this is that the grasses that grow their die out each year, and as they die out they decompose very quickly, giving the soil a new layer of decomposed biomass each year.
Because of the properties of the soil, this the region of Europe that is heavily used for farming, mostly crops like the wheat, hops, and corn. The conditions are excellent for them, they do not take a lot of the soil, and also contribute to keeping the soil very fertile constantly with their decomposing roots and steams.
