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In an ecosystem, each trophic level receives energy from the level below it. What is the source of energy for the first trophic level?
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Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?
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After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?
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16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.
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In an ecosystem, each trophic level receives energy from the level below it. What is the
source of...
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