Students are given data from an investigation that identified some of the chemical elements present in four different samples.
Elements Present in Samples
Sample
Sample
1
2
Elements
Hydrogen, phosphorus, and nitrogen
Aluminum, silicon, and copper
Calcium, potassium, and nitrogen
Sample 2
Sample 4
Iron, oxygen, and magnesium
Sample 3
Which sample was most likely DNA?
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it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

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