What is the frequency of an electromagnetic wave that has a wavelength of 300,000 km?
A) less than 1 Hz
B) 1 Hz
C) more than 1 Hz
B
Environmental & Atmospheric Sciences
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Water in a(n) ___________ may be brackish as a result of the mixing of freshwater and saltwater with tidal
fluctuations. Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences
Explain fluctuations in atmospheric carbon dioxide concentration both within the course of a single year and over the last century
What will be an ideal response?
Environmental & Atmospheric Sciences
The most abundant fossil fuel in the United States is ________
A) crude oil B) nuclear power C) natural gas D) coal
Environmental & Atmospheric Sciences
A stream begins at an elevation of 200 meters and flows a distance of 400 kilometers to the ocean. What is the average gradient?
a. 0.5 km/in b. 2 km/m c. 0.5 m/km d. 2 m/km
Environmental & Atmospheric Sciences