What is the primary method of energy acquisition for phytoplankton?
a. oxygen metabolism
b. chemosynthesis
c. photosynthesis
d. methane metabolism
e. respiration
c
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Temperatures become more variable and precipitation decreases as one travels from west to east from Europe into Asia. This is best explained by
A) prevailing westerlies and the orientation of mountain chains. B) the moist eastern side of the subtropical high. C) the moist western side of the subtropical high. D) monsoonal winds bringing relatively warm moist winds in the winter.
The ____________ ____________ ____________ is the greatest of all ocean currents, and flows eastward driven by
westerly winds. Fill in the blank(s) with the appropriate word(s).
The mating ritual of the blue-footed boobies in the Galapagos Islands includes a complex dance. The birds will not mate with other birds that do not know the dance. This is an example of ________
A) reproductive isolation B) mechanical isolation C) behavioral isolation D) structural isolation E) geographic isolation
In subarctic (Dfc, Dfd, Dwc, Dwd) climates, which of the following explains the presence of a continuous, thin snow cover for many months of the year?
A) High snowfall totals B) Long summers C) Geothermal energy from within the Earth D) Low evapotranspiration rates E) Above-freezing temperatures in the winter