Since the 1950s, the ____________________ has increased global food production by planting monocultures of key crops, increasing yields, and increasing the number of crops grown per year.
Fill in the blank(s) with the appropriate word(s).
green revolution
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The region where the trade winds meet is sometimes called the doldrums
Indicate whether the statement is true or false
A stream is cutting into a valley wall. Which of the following is the most likely trigger for a mass wasting event?
A) The stream will saturate the slope and generate a mudflow. B) The stream erodes the toe of the slope, which results in the slope becoming oversteepened. C) Upslope trees will be removed, reducing slope strength. D) The stream will deposit extra sediment on the slope, increasing the weight on the slope.
Compared to Earth's atmosphere, the Martian atmosphere has surface pressures that are ________
A) 50 times those on Earth B) 32.1 times those on Earth C) 1.5 times those on Earth D) 0.1 times those on Earth
Anthropogenic means ________ in terms of climate change
A) "good for humans" B) "caused by humans" C) "fixed by humans" D) "made by Nature" E) "changed by the biosphere"