Biology, 27.06.2019 11:00 marjorieheckaman
Read this excerpt from "dna testing." dna samples from insects preserved in amber can date back to before the time of the dinosaurs, which died out 65 million years ago. george poinar of oregon state university, for example, has even extracted muscle tissue from a 125-million-year-old lebanese weevil. this is, says poinar, "the best preserved protein on the face of the earth." so far, dna has been successfully extracted from about a half dozen ancient samples in amber. select the most accurate summary of kaku's argument.
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In which situations is the principle of cross-cutting relationship useful in determining relative age?
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Biology, 22.06.2019 07:20
If your blood becomes too concentrated with iona, what will happen to the red blood cells
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Biology, 22.06.2019 09:00
What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.
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Biology, 22.06.2019 15:00
Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow
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Read this excerpt from "dna testing." dna samples from insects preserved in amber can date back to b...
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