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Why are humans more susceptible to concussions than bighorn sheep and woodpeckers?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Do plant cells perform cellular respiration?

The climate on the leeward side of a mountain differs from that on the windward side mostly in