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What can protons and neutrons be broken down into?

asked Jan 6 in Science by MariSchumach (450 points)

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What can prevent the passage of molecules and ions between cells, such as in the blood-brain barrier?

asked Jan 6 in Science by ShirleySteer (450 points)

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What can often be used to measure distance?

asked Jan 6 in Science by WayneNgb6285 (590 points)

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What can occur when one end of a small diameter tube is immersed in liquid?

asked Jan 6 in Science by DonteBladen8 (510 points)

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What can lenses be used to make?

asked Jan 6 in Science by CheriMartz3 (290 points)

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What can human facial expressions communicate?

asked Jan 6 in Science by AudraKinard1 (470 points)

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What can help scientist gather information for an investigation?

asked Jan 6 in Science by KatjaSilverm (510 points)

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What can happen spontaneously or as a result of mutagens in the environment?

asked Jan 6 in Science by KHIRachelle2 (570 points)

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What can happen if there is a blockage in circulation to the brain?

asked Jan 6 in Science by FloraMcKelve (620 points)

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What can echinoderms sense with their simple eyes?

asked Jan 6 in Science by MaximilianLo (410 points)

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What can destroy living cells, produce mutations and cause cancer?

asked Jan 6 in Science by ValenciaZlp8 (530 points)

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What can demonstrate the decrease in energy, biomass or numbers within an ecosystem?

asked Jan 6 in Science by LachlanFrair (490 points)

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What can damage the hair cells lining the cochlea of the inner ear?

asked Jan 6 in Science by WilliamLangt (430 points)

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What can carry nerve impulses from tissues and organs to the spinal cord and brain?

asked Jan 6 in Science by KingDriver8 (430 points)

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What can be used to speed up biochemical reactions?

asked Jan 6 in Science by FredricKohle (370 points)

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What can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind?

asked Jan 6 in Science by LeathaBinett (390 points)

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What can be used to determine the mass of a quantity of material?

asked Jan 6 in Science by AYHHildegard (410 points)

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What can be used to convert the energy provided by the sun to usable electrical energy?

asked Jan 6 in Science by SofiaCarandi (650 points)

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What can be used to accelerate the rate at which chemical reactions occur?

asked Jan 6 in Science by RoryEggers98 (450 points)

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What can be thought of as the most biologically productive regions on earth?

asked Jan 6 in Science by CruzDenker57 (330 points)

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