Biology, 28.07.2019 16:40 jimeneznancy650
What is measured in the radiocarbon dating of organic materials? a. the increase of carbon-12 in a living organism b. the ratio of carbon-14 to carbon-12 in a sample c. the ratio of carbon-12 to carbon-14 in a sample d. the decrease in carbon-12 in a decaying organism
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Biology, 22.06.2019 01:20
Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen
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Biology, 22.06.2019 09:00
Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land
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Biology, 22.06.2019 10:00
14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca
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Biology, 22.06.2019 10:30
Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
Answers: 1
What is measured in the radiocarbon dating of organic materials? a. the increase of carbon-12 in a...
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