Natural selection may favor traits that help organisms

A. successfully raise offspring.
B. survive.
C. acquire mates.
D. all of the above


Answer: D

Environmental & Atmospheric Sciences

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-273°C (-459.4°F) is

A) the same as 273 Kelvin. B) an average boiling temperature. C) 0° absolute temperature. D) not possible on any scale.

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You are hiking in the desert in Namaqualand in South Africa and you notice an area covered

with white sedimentary deposits. You taste the deposits and they taste salty. This is most likely an example of a. an evaporite. d. a pyroclastic rock. b. a metamorphic rock. e. a volcanic rock. c. a detrital sedimentary rock.

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Instructions: Choose one answer from each pair of selections. Volcanic eruptions rich in sulfur tend to WARM | COOL Earth's surface

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Comparing the workload of American workers in 1973 and 2006, the economist and sociologist Juliet Schor concluded that American workers in 2006 worked the equivalent of:

a) one week longer each year than their 1973 counterparts (more than 40 additional hours annually). b) five weeks longer each year than their 1973 counterparts (more than 200 additional hours annually). c) one week less each year than their 1973 counterparts (40 hours less a year). d) five weeks less each year than their 1973 counterparts (200 hours less a year).

Environmental & Atmospheric Sciences