0000 UTC Convert the following time from UTC to the indicated U.S. time zones:

The polar front theory of midlatitude cyclones, developed around a century ago,

A) has long fell into disfavor among meteorologists. B) has stood the test of time remarkably well. C) was never accepted by the meteorological community.

Which environmental sphere encompasses all of life on Earth?

A. atmosphere B. hydrosphere C. cryosphere D. biosphere E. lithosphere

Long, thin lava flows are typically produced by

A) volatile-rich eruptions.
B) high-viscosity lavas.
C) low-viscosity lavas.
D) collapsing eruption columns.

A species' realized niche ________

A) cannot be smaller than its fundamental niche B) is never really realized because it isn't real C) cannot be larger than its fundamental niche D) is the portion of a species' niche that is "taken over" by competing species E) is the niche that a species realizes/experiences in the absence of competition