Geographic isolation may result from
a. a volcanic eruption
b. an earthquake
c. a mountain range
d. all of these answers
e. none of these answers
D
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The physical geographic perspective that pays special attention to the relationships between humans and other variables in ecosystems is the ______________perspective
Fill in the blank(s) with correct word
Mountain valleys subjected to glaciation are typically shaped like ____
A)a semi-circle B)the letter "V" C)the letter "U" D)one half of a rectangle E)an inverted letter "V"
A/An ________ is a series of large tanks that begin with anaerobic treatment and follows with plants and biological life forms that would live in various wetland areas
A) wastewater treatment plant B) septic tank C) septic field D) leach field E) eco-machine
Drip irrigation systems can increase crop yields by 20–90%
Indicate whether the statement is true or false