About ____ of the world's human population lives in the developing countries
a. 20%
b. 40%
c. 60%
d. 80%
e. 90%
D
Environmental & Atmospheric Sciences
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Evidence that hominins were bipedal comes from fossil footprints in volcanic ash, discovered in Tanzania by
____________________ ____________________ in 1978. Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences
This form of air pollution is created when sunlight transforms gases and aerosols: ________
Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences
Rocks are __________ when they are scratched by sediment particles moved by wind.
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences
The depth beneath the surface of the ocean below which passing waves do not disturb the water
column is called:a. thermocline. b. wave base. c. fetch. d. wave depth. e. the ocean floor
Environmental & Atmospheric Sciences