What might be the predominant lifestyle on Earth?
A. omnivory.
B. masting.
C. herbivory.
D. commensalism
E. parasitism.
E. parasitism.
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Gurdon's nuclear transplantation experiments with clawed toads supported the hypothesis that:
A. differentiation is the result of genes being successively deleted from the genome. B. differentiation is the result of genes being successively turned off. C. differentiation causes cells to become pluripotent. D. only nuclei from the blastocyst retain sufficient potency to produce an adult organism. E. All of these choices are correct.
Communities near benthic hydrothermal vents survive in perpetual darkness, where no photosynthesis
is possible. What do the producers of this ecosystem use as an energy source?
What will be an ideal response?How are bacteria the beginning and end of the nitrogen cycle? What will be an ideal response?
Green Bacteria Phototrophy
What will be an ideal response?