Asymmetrical ________ are produced by current flowing in a single direction.
A. ripple marks
B. ridge marks
C. mullion marks
D. burrow marks
E. wave marks
Answer: A
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Salt buildup may
a. increase crop growth b. increase yields c. eventually kill weeds d. eventually make the land unproductive e. initially decrease yield, but later increase yield
What is potable water?
a. water that can be easily transported from place to place b. drinkable water based on established purity standards c. water that contains dangerously high concentrations of dissolved solids d. industrially polluted water e. water that can be used for purposes other than drinking
Atmospheric water vapor is both a greenhouse gas and affects human comfort level
Indicate whether the statement is true or false
The particular combination of inputs that are used to produce and output is called human capital
Indicate whether the statement is true or false