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All the water that is on earth today is the water that has been on the planet. Freshwater is a million years old. The same water is flowing in a continuous loop in the form of falling as rain and snow from the clouds to the earth’s surface. Running in rivers and ponds. This is due to the water cycle. The cycle where the water evaporates in the atmosphere and is from the atmosphere and then cloud loses the water as rain or snow.
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it saves energy for the organism to produce fewer chromosomes. ... sexual reproduction joins two cells that each have half the total chromosome number.
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I believe the answer is all of the above
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Definition. A convenience sample is a type of non-probability sampling method where the sample is taken from a group of people easy to contact or to reach. For example, standing at a mall or a grocery store and asking people to answer questions would be an example of a convenience sample.
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