Describe the 3 types of plate boundaries and the 2 types of tectonic. Identify the formula for density and apply what you know about density to explain what occurs at subduction zones.

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.

Why are young eastern european democracies at an increased risk for turmoil during a global recession? a) anger against increased democracy b) failure of the free market system c) government corruption d) lack of from the e.u.