Terracing, contour farming, intercropping, and crop rotation all ________
A) are prohibited in organic farming
B) are techniques for conserving soil resources and fertility
C) contribute to erosion and desertification
D) are aspects of IPM
E) contribute to leaching
B
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Which of the following rock types is not characteristic of volcanic domes?
A) Glassy volcanic rocks that are unstable over time B) Vesicular basalt with very large holes from dangerous gas C) Volcanic breccia formed by fracturing of the outer part of the dome D) Mixtures of pieces of the dome and ash from dome collapse
How many degrees of longitude equals one hour of time?
A) 15° B) 24° C) 25° D) 45°
Human populations are not subject to the same type of biological factors that influence other populations.
Answer the following statement true (T) or false (F)
Approximately ________% of the food we consume comes from ________ crop species
A) 90; 15 B) 90; 100 C) 50; 20 D) 10; 100 E) 50; 50