Answer: The answer to this would simply be (B.). I am very good at grammar. I know for a fact the first one would not make any sense. And also c and d are talking in past and future tense. So that does not make sense. Hope this helps. :)
Answer:
Explanation:
land formation human system
weather events physical system
volcanic eruptions physical system
houses human system
agriculture i want to say human system.
railroads human system.
The correct answer would be, Kilogram. K.G.
Kevin weight his baggage before going to trip. In Kilogram the measuring scale showed the weight of his baggage. The shortened form of the unit is K.G.
Explanation:
The unit which is used to measure weight of something is either Kilogram or Pounds. The measuring scales usually have both units printed on it. But the unit which is most widely used in airports to measure weight is Kilogram.
So when Kevin was going on a trip and wanted to measure the baggage weight, the measuring scale measured the weight in Kilograms. The shortened form for Kilogram is K.G.
There are further sub units of Kilogram, which are used in measuring other quantities, for example, Kilogram, Gram, Milligram, Microgram, etc.
Another unit of weight is Pounds and its short form is LBS
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In a(n) observational study, a researcher carefully and systematically watches and records behavior, taking care to avoid affecting the subjects being studied.
A type of study that observes an individual or measures a specific result. No attempt is made to affect the outcome (for example, no treatment is given).
A very simple example is some kind of research. Suppose someone on a busy street in the neighborhood of New York asks a random passerby for the number of pets and uses that data to determine if more pet food stores should be added to the area.
It is called an observational study because investigators observe people without any manipulation or intervention. This is in contrast to randomized controlled trials in which researchers intervene to determine the impact on results.
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