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Biology, 22.06.2019 07:50
Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers
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Biology, 22.06.2019 19:10
which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)
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Biology, 22.06.2019 20:30
Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days. true or false
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Which is generated by movements of tectonic plates?
a.
volcanoes
b.<...
a.
volcanoes
b.<...
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