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Biology, 22.06.2019 09:40, QueenMiah16
Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.
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Biology, 22.06.2019 12:30, musa79
Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.
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Biology, 22.06.2019 21:40, 19youngr
According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this? a. this implies that dna and proteins aren't essential in cells today. b. this implies that rna can catalyze any chemical reaction that enzymes catalyze. c. this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna. d. this implies that dna and proteins evolved after rna.
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Mathematics, 31.01.2020 19:03
Mathematics, 31.01.2020 19:03
Computers and Technology, 31.01.2020 19:04
Mathematics, 31.01.2020 19:04
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Chemistry, 31.01.2020 19:04
History, 31.01.2020 19:04
Mathematics, 31.01.2020 19:04