The rock record indicates that photosynthesis began on earth about 3.5 million years ago.
a....
Chemistry, 21.08.2019 22:30 adstone814
The rock record indicates that photosynthesis began on earth about 3.5 million years ago.
a. true
b. false
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Arecipe calls for 1.2 cups of oil. how many liters of oil is this?
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Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.
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