a distance of 1852 meters (6076.115 feet), the length of a minute of arc of a great circle of the…
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Neap tide
a tide of minimum range occuring during the first and third quarters of the moon (M3)
Nectivorous
feeding primarily on nectar (R3)
Nuptial flight
a process of dispersal among many ant species in which new queens fly from the nest along with winged males…
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Observatory
a building equipped for observing natural phenomena, as in astronomy (A5)
Observer bias
error introduced into scientific investigations because of the person collecting data (M4, M5)
Orographic lifting
the forcing of air up a mountain’s slopes (R1)
Orographic rain
rainfall that results from the clouds formed by orographic lifting of a moist air mass (R1)
Osmoconformer
organism that is not able to control salt concentrations in its bodily tissues (M3)
Osmoregulator
organism that is able to control salt concentrations in its bodily tissues (M3)