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.
A biofilm composed of a community of microorganisms glued by mucilage to a surface.
The river continuum.
A herd of barren-ground caribou at the Thelon River. This subspecies is a long-distance migrant
scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by
Christo, Over the River, Project for the Arkansas River, State of Colorado.
It is important for new employees to know the location of all fire extinguishers. (C) Sweep the area ...