After taking urban warming into account, average surface air temperatures have increased by about ________ in the past 130 years
a. 0.01oC
b. 0.1 oC
c. 0.6 oC
d. 6 oC
c
Environmental & Atmospheric Sciences
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Agricultural density is the ratio of farmers to the total population
Indicate whether this statement is true or false.
Environmental & Atmospheric Sciences
How was low-level nuclear waste disposed of prior to 1970?
a. sanitary landfills b. on-site incineration c. recycled into nuclear fuel d. added to cement e. dumped in the ocean
Environmental & Atmospheric Sciences
The ________ are the mineral class that accounts for more than 90 percent of the Earth's crust
A) silicates B) sulfates C) carbonates D) sulfides
Environmental & Atmospheric Sciences
What is the basic subunit of elements?
A) molecules B) neutrons C) protons D) electrons E) atoms
Environmental & Atmospheric Sciences