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Which weighs more: a pound of feathers or a pound of lead? explain.
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If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?
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Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra
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Which weighs more: a pound of feathers or a pound of lead? explain....