The use of fertilizers in agriculture has significantly altered several nutrient cycles including
A. hydrologic.
B. nitrogen.
C. carbon.
D. All of these are correct.
Answer: B
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How many of the plates on the map consist entirely of ocean floor (or ocean floor with islands)?
After drawing in the plate boundaries using the appropriate symbols on the tectonic map below, answer the question above. When asked to cite evidence to support your answers, only cite evidence that you can see on this map.
Scale: 1 cm = 300 km 11 inch = 500 miles2
Despite the profound effects that earthquakes have had on civilizations for so many centuries, systematic scientific observations were not made until the early ________ century, when good descriptions were made of earthquake effects on the land.
A. thirteenth B. nineteenth C. seventeenth D. twentieth E. eighteenth
The asthenosphere is actually a part of the ________ of the Earth.
Fill in the blank(s) with the appropriate word(s).
Doppler radar can measure ____
a. rainfall intensity b. the speed at which precipitation is moving horizontally c. rainfall intensity and the speed at which precipitation is moving horizontally d. wind speeds of small tornadoes e. forecasted storm cells