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Biology, 22.06.2019 02:30
What were the main components of earthβs earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen
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Biology, 22.06.2019 08:30
What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna
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Biology, 22.06.2019 09:30
What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid
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Biology, 22.06.2019 15:30
Will ! a cell containing a 3% sucrose solution is placed into a beaker containing a 7% sucrose solution. assume the cellβs membrane is permeable to water, but not permeable to the sucrose. where will the water diffuse? explain.
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A group of scientists must complete a study, but they have limited funding from a government organiz...
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