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The following questions refer to the sketch of the H-R diagram below.Please choose the best answer in each case,i.e. ,choice (a)refers to the entire main sequence,while (c)and (d)refer to only small parts of the main sequence.If choice (c)or (d)offers a better answer to a particular question than (a),use the best choice.You may use the same choice more than once.
-Which group represents stars that are hot but dim?
Control Group
A group in an experiment or study that does not receive treatment by the researchers and is used as a benchmark to measure how the other tested subjects do.
Fertilizer
Materials applied to crops to supply essential nutrients needed for growth, typically containing nitrogen, phosphorus, and potassium.
Experimental Group
In a scientific experiment, a group in which the experimental variable is manipulated. Compare with control group.
Cladogram
A branching diagram that illustrates taxonomic relationships based on the principles of cladistics.
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