In which supereon did single-celled organisms first form on earth?
a. cambrian
b. paleo...
Biology, 22.11.2019 20:31 NNopeNNopeNNope
In which supereon did single-celled organisms first form on earth?
a. cambrian
b. paleozoic
c. phanerozoic
d. precambrian
Answers: 1
Biology, 21.06.2019 20:30
According to the big bang theory, after the "bang," the universe remained dark until about 300,000 yearsone billion yearsthree minutesthree billion years later, when neutral atoms began to form.
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Biology, 22.06.2019 03:30
Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab
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Biology, 22.06.2019 05:20
The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis
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