A fire on the surface of Cleveland's Cuyahoga River in 1969 most likely resulted from
A) nonpoint source pollution from street and storm water runoff.
B) point industrial source pollution.
C) the uncontrolled growth of plants from fertilizer runoff.
D) the failure of a city to treat its sewage before entering this river.
Question 2
The best predictions of U.S. population growth consider
A) total fertility rate.
B) age a woman first reproduces, total fertility rate, and age of the father of all children.
C) total fertility rate, age of first reproduction, and average household income.
D) immigration, total fertility rate, and age of first reproduction.
The meandering Okavango River, Botswana.
Views of Earth’s Surface
Fire rainbow
A spark tester connected to a spark plug wire or coil output. A typical spark tester will fire only ...
Gaussian surface in the presence of a dielectric
Open pit mining creates immense holes at the surface