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Biology, 22.06.2019 03:30
Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis
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Biology, 22.06.2019 08:30
What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons
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Biology, 22.06.2019 11:30
Which structure in the cardiovascular system connect arteries to veins?
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Biology, 22.06.2019 22:00
In the 1500s, an astronomer developed a new model of the universe. this model had the sun at the center of the universe, not earth. who was this astronomer?
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What type of tissue is the heart made of?...
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