Which of the following represents a type of top-down regulation for rattlesnakes living in Arizona?
A) The availability of fresh water
B) The number of mice in the region
C) Abundance of rocks under which snakes can hide
D) The number of snake-eating hawks and humans in the region
D
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Historically, ________ of the world's population has always lived in ________, at least since the beginning of written history.
A. A small percentage; rural communities B. The vast majority; rural communities C. At least half; rural communities D. At least half; urban areas E. The vast majority; urban areas
Frost wedging in the mountains produces ____
A)tailings B)talus C)conglomerate D)exfoliate E)regolith
Present-day average surface air temperatures are the largest in the past: a. 1,000 years
b. 500 years. c. 100 years. d. All of these choices.
A family has migrated from the south side of Chicago to a town beyond the suburban ring because they like the schools and housing prices there. This is an example of counterurbanization.
Indicate whether the statement is true or false.