Which of the following is not a primary pollutant?

Smoke from my grandmother's cigarette

Gases released from a volcano

Fumes released from spray paint

Exhaust from Nick and Alex rolling coal (emit large amount of sooty exhaust)

In a model urban hierarchy, the population of a city, town or village is inversely proportional to its rank in the system (i. e. if the largest city is 4 million the second will be 2 million or 1/2, the third will be 1/3 and so on).

Why do you think engineers choose the isthmus of panama as the location for a canal

Why are charts effective tools for organizing information?

Which of the following is not a reason why India has a larger male population than female population? A. Daughters are more often neglected than sons. B. Female babies face a higher instance of abortion and infanticide. C.

Which of the following choices gives the most specific relative location? A. in Egypt B. between Louisiana and Mississippi C. in New Zealand D. northeast of Baffin Island

What side did Native Americans originally support when the Civil War broke out

In the northern hemisphere, the sun is lowest in the sky with less radiation in the

Where are the highlands of South and Central America located? Answer: Along the Pacific coast

What language is the most widely spoken in the Caribbean, Central America, and South America? American French Portuguese Spanish

Who uses the river nile