The Green Revolution of the 20th century was characterized by ________
A) increased awareness of the environment and environmental issues
B) increased use of environmentally sound products
C) advancements in agricultural techniques
D) increased concern for the environment
C
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Predict which of the Maghreb countries will have the most economic growth in the future
What will be an ideal response?
One reason the temperature decreases with increasing altitude in the troposphere is ________
A) the water vapor in the troposphere is heated by terrestrial radiation B) the chemical reaction that forms ozone gives off heat and ozone increases in concentration toward the upper troposphere C) the solar radiation is absorbed by ozone in the stratosphere D) molecular spacing increases with increasing altitude
The most prominent physical landscape of the Central Africa realm is the __________.
a. tropical rain forests b. Cameroon Highlands c. Great Rift Valley d. Lake Chad e. volcanic island São Tomé and Príncipe
genetic drift and migration are mechanisms of evolution bt are not mechanisms of natural selection
a. true b. false