The signal detected by a Doppler radar is a ____
A) microwave emitted by lightning
B) sound wave produced by thunder
C) microwave reflected by precipitation
D) sound wave produced by wind shear
C
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Which of the following terms refers to the nerve endings in the human eye that are responsible for the perception of colour?
A. pupil B. rod C. cone D. iris
After ice sheets and glaciers, ________ contain(s) the next highest percentage of the Earth's freshwater.
A) rocks & minerals B) the atmosphere C) groundwater D) lakes and rivers
What evidence suggests to scientists that magma generation at convergent boundaries is different than magma generation at mid-ocean ridges?
A) crystal size B) igneous action C) partial melting caused by water D) lava composition
Estuaries, such as Chesapeake Bay, are drowned glacial-cut valleys.
Answer the following statement true (T) or false (F)