Which of the following sources of pollution is considered a point source?
a. Oil dripping from cars as they cross the railroad tracks
b. Runoff from farm fields during the heavy spring rains draining into the Mississippi River.
c. None of these choices.
d. Air pollution in an industrialized city.
e. Municipal water treatment plant discharging into the river.
e
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Genetic counselors are typically medical doctors who specialize in treating infertile couples
a. True b. False Indicate whether the statement is true or false
The species concept that relies most heavily on the criterion that species are evolutionarily independent units that are isolated by gene flow is ________
A) the morphospecies concept B) the phylogenetic species concept C) the biological species concept D) This criterion is common to all of these concepts.
The 1.4 million species identified are equally distributed across the Earth's surface
Indicate whether the statement is true or false
The nucleus of an atom is composed of
A. neutrons. B. protons and neutrons. C. protons and electrons. D. electrons. E. protons.