Pl ! scientists estimate that the earth formed some 4.6 billion years ago with the first forms of life appearing around 3.5 billion years ago. these first forms of life were simple prokaryotes. later, the first photosynthetic organisms resulted in more in the atmosphere. this allowed for more higher level organisms to appear on earth. a) carbon b) nitrogen c) oxygen d) sulfur
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Biology, 21.06.2019 20:00, noahmartinez3636
Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic. b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy. c. all bacterial enzymes are harmful to humans and the environment. d. microbes create pollutants and toxins that harm the environment.
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Biology, 21.06.2019 21:30, esmeraldavelez63
The influenza virus cause the flu, but not other diseases. why?
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Biology, 21.06.2019 22:10, jakhunter354
Amouse that is homozygous for the dominant trait has the genotype . it has . a mouse that is homozygous for the recessive trait has the genotype . it has . image of fur color of mice
Answers: 1
Pl ! scientists estimate that the earth formed some 4.6 billion years ago with the first forms of li...
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