What is a characteristic property of the noble gases?

A. Relatively unstable

B. Highly reactive

C. Colorful and shiny

D. Very stable

Why is pollution a greater problem in mexico city?

How to prevent earthquake

Which of the following States is bordered by a body of water? A Oregon B. Ohio c. Wyoming D. West Virginia

Which type of map best shows differences in elevation? a. mercator b. robinson c. gnomonic d. topographic

Which of the choices below are sources of pollution that is the most difficult to track and regulate? a. lawn fertilizer runoff b. a waste treatment plant c. a factory d. a nuclear power plant

The distance from the sun to earth is one astronomical unit

Carbon-oxygen cycle in a sentence

The high population density of modern Japan has led to A. Environmental Issues B. many poor neighborhoods C. Urban Sprawl D. Efficient Public transport

Which types of projections are described below? lines of latitude and longitude intersect at right angles on a projection map. the projection map is useful for planning air routes.

What factor defines all groups in the koppen system, with the exception of dry climates?