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Biology, 22.06.2019 01:00
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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Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?
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Biology, 22.06.2019 05:30
Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim
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Biology, 22.06.2019 12:30
Are the layers of rock above and below the coal older or younger?
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Explain how models are used in science...
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