Biology, 11.12.2020 01:40, tiaholmes31
Use the periodic table to predict why Krypton, another noble gas, is not used in airships.
Infer: how would the result of the spark have been different it the Hindenburg had been filled with helium?
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Answers: 3
Biology, 21.06.2019 18:30, smelcher3900
The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.
Answers: 3
Use the periodic table to predict why Krypton, another noble gas, is not used in airships.
Infer: h...
Mathematics, 16.10.2019 05:30