Paleomagnetism helps scientists understand ____
a. the origin of Earth's magnetic field
b. the crust's chemical composition
c. the past location of continents
d. the depth of the Mohorovi?ic´ discontinuity
e. Earth's age
c
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Which of the following has been the primary source of oxygen for the Earth's atmosphere in recent geological times?
A. volcanic eruptions B. transpiration C. photodissociation D. photosynthesis
The set of rules used by living cells to translate information encoded with genetic material into proteins...The code defines how sequences of nucleotide triplets called codons specify which amino acid will be added next during protein synthesis
What will be an ideal response?
Which of the following groups can be called autotrophs?
a. ants, termites and butterflies b. wolves, coyotes and foxes c. rabbits, moles and robins d. daisies, roses and grass e. mushrooms and fungi
Which of the following was not offered as evidence to support Alfred Wegener's hypothesis of continental drift?
A) Lack of oceanic ridges that would indicate sea floor spreading B) The "jigsaw puzzle" shape of the continents C) Similar rock assemblages on opposite sides of the Atlantic Ocean D) Matching fossils of species on now separated continents