Answer:
Students who take a PE class and who will be eating sugary snacks before PE.
Explanation:
The control variable (or control group) is an experimental element which is constant or unchanged throughout the course of the experiment.
The option "students who take PE class and who will be eating sugary snacks before PE" will remain unchanged and constant because the whole point of the experiment is to see the effects on students performance in PE after eating sugary snacks.
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Isotopes are variants of a particular chemical element which differ in neutron number (neutral particle)and all isotopes of a given element have the same number of protons (positive particle) in each atom.So isotope B of the sodium will have 11 protons, 11 electrons but it may have a wide range in its number of neutrons.
Answer:
La importancia de la ADN en la celula es que la ADN contiene las instrucciones para construir las proteinas del ADN.
Explanation:
La ADN tambien se puede replicar y hacer copias de ella misma en cual esto es importante porque las celulas se dividen y necesitaran una copia del ADN original para poder crear mas celulas.
Igneous rock?? sorry if this is wrong
