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When geologists use index fossils to match up rock layers, it is referred to as what?
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Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation
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Biology, 22.06.2019 11:00
Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.
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Biology, 22.06.2019 14:50
Which statements best describe the atoms of the gas neon? check all that apply
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Biology, 22.06.2019 17:00
Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f
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When geologists use index fossils to match up rock layers, it is referred to as what?...
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