An emission spectrum is the<em> unique pattern of lines formed by a chemical compound when the radiation emitted after a transition from a higher to lower energy state, </em>passes through a prism separating it into the different frequencies of light forming a unique image.
Considering this information we know the answer is true because <em>Helium and hydrogen are different elements and therefore they have different emission spectrums.</em>
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Explanation: the exceeding of certain threshold limits of population density when environmental resources fail to meet the requirements of individual organisms regarding shelter,