The correct answer of the given question above would be the last option. The important difference between the crystals that Becquerel exposed to sunlight and the crystals that he kept in the drawer is that, there <span>was no difference between the crystals because Becquerel used uranium crystals in both instances. He concluded a mineral containing uranium could produce it's image in a photographic plate both without the sunlight and with sunlight. Hope this answer helps.
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<em>Because/ Since/ As</em> Neel enjoys growing fruits and vegetables, he volunteers at the community garden.
Shonda is not allowed to get her ears pierced <em>until</em> she turns thirteen.
<em>Unless</em> you return my sweater, I will not lend you any more clothes.
Answer:
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Explanation:
reclembantable
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It is primary because it is the official process of methodically collecting information about a certain topic in a specific time period
