Which of the following is a benefit of perennial wheat over annual wheat?
A) There is less soil erosion.
B) There is less use of fossil fuels.
C) There is more permanent storage of carbon.
D) There is less risk due to weather conditions.
E) All of these are benefits.
E
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An example of an autotrophic protist is
A) kelp. B) mosses. C) amoebas. D) choanoflagellates.
European wealth is unbalanced, as Eastern Europe has significantly more wealth than Western Europe
a. True b. False Indicate whether the statement is true or false
Which of the following is CORRECT regarding Arctic sea ice?
A) Until recently, seasonal variations in sea ice extent were rare. B) In the summer, most to all sea ice melts, only to refreeze in the winter. However, less water has been refreezing over the past decade. C) Summer sea ice reached its minimum extent in 2001 and has gradually increased since then. D) Since 1979, summer sea ice minimum extent and winter sea ice maximum extent have declined.
When the Sun is active (e.g. more sunspots and eruptions), the thermosphere increases in altitude
Indicate whether the statement is true or false