In cities, during warm daylight hours, less evaporative cooling in cities allows surface temperatures to rise higher than in rural areas, which results in a(n)____________________
Fill in the blank with correct word.
ANSWER: urban heat island?
heat island
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Is the outer edge of the atmosphere clearly defined? Explain
What will be an ideal response?
In comparing Malthus's theory to actual world food production and population growth during the past half-century, the principal difference is that
A) actual food production has been much higher than Malthus predicted. B) Malthus's theory predicted much higher food production than has actually occurred. C) actual population growth has been much higher than Malthus predicted. D) Malthus's theory predicted much higher population growth than has actually occurred. E) population increased geometrically while food production increased arithmetically.
The presence of stratified, or sorted, glacial sediment indicates that
A) it was deposited in terminal moraines by continental glaciers. B) it was deposited by glacial meltwater. C) it was deposited as till by a continental glacier. D) it was deposited by medial moraines.
Using blood tests and statistical sampling, medical researchers at New York City's Mount Sinai School of Medicine found that it is likely that nearly every person on the earth has detectable levels of ____ in their bodies.
A. hazardous chemicals B. carcinogens C. petrochemicals D. DDT E. persistent organic pollutants (POPs)