Until the late 1700s, European economic expansion was significantly limited by dependence on wind and water for power, and wood for building materials
Indicate whether this statement is true or false.
TRUE
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A program undertaken by the U.S. Forest Service and the National Advertising Council that has helped humans and saved forests is
a. the prescribed burn program b. the Smokey Bear campaign c. the program to restore watersheds below clear cuts d. the program to remove dams e. the program to thin trees in old growth forests
World music is an example of declining diversity and the homogenizing of world culture
Indicate whether this statement is true or false.
Lower velocity in channel where not as much water is in contact with the sides of the channel or the air.
a. true b. false
Which of the following refers to a substance which triggers an immune response?
A) antibody B) antigen C) lymphocyte D) macrophage