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What refers to a substance made from two or more elements joined by chemical bonds?

asked Jan 7 in Science by CharissaOste (470 points)

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What refers to a group of individual organisms of the same species that live closely together?

asked Jan 7 in Science by SheliaCates (430 points)

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What reduces the need for pesticides and other toxic chemicals?

asked Jan 7 in Science by MckinleyKeen (470 points)

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What receives blood in the heart?

asked Jan 7 in Science by TrishaStanto (670 points)

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What reaction means, literally, “splitting with water"?

asked Jan 7 in Science by LawrenceBuck (410 points)

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What reaction is considered the reverse of photosynthesis?

asked Jan 7 in Science by AndreasOldha (410 points)

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What radiation, generally produced by thermal motion and the vibration and rotation of atoms and molecules, literally means "below red"?

asked Jan 7 in Science by MikelNobeliu (630 points)

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What purpose does the appendix serve in humans today?

asked Jan 7 in Science by NonaJulius89 (330 points)

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What pulls skydivers towards the earth?

asked Jan 7 in Science by BarneyWearne (490 points)

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What provides the shape of a cell?

asked Jan 7 in Science by BlakeBradfie (670 points)

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What provides building materials for the body?

asked Jan 7 in Science by MistyLawler (490 points)

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What provides an early, rapid, and nonspecific defense against invading pathogens?

asked Jan 7 in Science by DallasMerrim (530 points)

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What provides a protective covering for the body and helps maintain homeostasis?

asked Jan 7 in Science by JanIson45680 (430 points)

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What proteins synthesized in cells act as catalysts?

asked Jan 7 in Science by MervinBurt9 (370 points)

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What proteins span the entire plasma membrane?

asked Jan 7 in Science by FrancescaKea (310 points)

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What protects you from pathogens and keeps you healthy?

asked Jan 7 in Science by TommyCarslaw (430 points)

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What protects the scalp from ultraviolet light exposure and loss of body heat?

asked Jan 7 in Science by AlejandrinaO (510 points)

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What protects reptiles from injury and loss of water?

asked Jan 7 in Science by BonnieEdens (370 points)

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What protects reptiles from drying out?

asked Jan 7 in Science by MALMyrtle40 (510 points)

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What protects a developing flower while it is still a bud?

asked Jan 7 in Science by AnnmarieMcCl (570 points)

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