Which of the following is NOT an important function of Earth's atmosphere?
A) Insulates the surface against temperature extremes
B) Maintains a water supply
C) Supplies the oxygen for life
D) Screens out much of the Sun's ultraviolet radiation
E) Maintains an envelope of pure oxygen
Answer: E
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In general, K-strategists have a
A) type I survivorship pattern, and r-strategists have a type III survivorship pattern. B) type II survivorship pattern, and r-strategists have a type I survivorship pattern. C) type II survivorship pattern, and r-strategists have a type III survivorship pattern. D) type III survivorship pattern, and r-strategists have a type II survivorship pattern.
The unit 1 ppm is equivalent to which of the following?
A) 1000 ppb B) 0.0001% C) both a and b D) neither a nor b
Which of the following can cause enzyme activity to either increase or decrease?
A) changing the temperature B) increasing the substrate concentration C) both a and b D) neither a nor b
What are the major causes and effects of climate change?
What will be an ideal response?