Which region of the sun's electromagnetic spectrum is most responsible for human skin cancer?
A) infrared
B) ultraviolet
C) visible
D) near infrared
B
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Antarctic Bottom Waters are the densest in the world, and characterized by ____ temperatures and ____ salinities than surface waters
A) ?lower; higher B) ?higher; lower C) ?higher; higher D) ?lower; lower
Lateral sliding of plate boundaries is called ____________________ movement
Fill in the blank(s) with correct word
What is a property of a conglomerate?
A) composed of rounded gravel B) igneous rock C) secreted from shelled animals D) extremely rare
Ecosystem services ________
A) contribute to keeping ecosystems productive B) are actions humans must take in order to protect and serve the environment C) are economically valuable services provided by natural systems D) are required to rebalance natural systems that we have disturbed E) are valuable to natural systems but not to human-created systems