Geography, 21.10.2020 08:01, testingawge
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Elements in group 2 are called alkaline earth metals. What is most similar about the alkaline earth metals?
A. how many protons and neutrons they have
B. which chemical properties they have
C. how many total electrons they have
D. which period they are most often found in
Answers: 3
Geography, 23.06.2019 11:10, Justinoreilly71
Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks
Answers: 2
Geography, 23.06.2019 19:00, 2023greenlanden
How many structures do prokaryotic cells have in common with the eukaryotic cells? a. 2b. 3c. 4d. 5
Answers: 1
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