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What role did the ozone play in the evolution of life on earth
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What was the land like over 500 million years ago? what was under the sea?
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Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine
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Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases
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The first generation of offspring from the cross of two parents is called the a.f1 generation b.f2 generation c.short generation d.p generation
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What role did the ozone play in the evolution of life on earth...
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