The rotating movement along the earth's axis
The answer is c. Can be used and consumed without risk
Consuming non potable water could generate a great risk toward our health because of the baacteria or any other small organism that might live in the water.
currentyly , about 89% people in the world have access to potable water. While the rest ( usually the one who live in non developed country) do not have access to it.
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The answer to this is: C) a factor that may affect an experiment or investigation. This is the best answer. A and B can be eliminated. D describes a controlled variable which is more specific than a scientific variable, thus C is the best answer. It is the best description of just a scientific variable. And, The second one is B: Robert Hooke was a famous scientist who experimented with springs (metal coils). He found that the farther you stretched the spring, the larger the force with which the spring pulled back on you.
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The correct answer would be A
