The magnetic field of Earth is vertical at the equator and horizontal at the poles.
Answer the following statement true (T) or false (F)
False
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Temperatures in Earth's atmospheric layers vary in a zig-zag pattern with altitude principally because
A) the chemical composition of the atmosphere varies. B) air is compressible. C) the density of air varies with altitude. D) pressure varies with altitude.
How were the Appalachian Mountains formed?
A) thrust and uplift of continental crust B) accretion by subduction zones C) as a volcanic island arc D) sea mounts and island volcanoes
Streams that exhibit flow only during wet periods are called ________
A) intermittent streams B) braided streams C) ephemeral streams D) meandering streams
A mineral's melting point generally increases with increasing pressure.
Answer the following statement true (T) or false (F)