When the ph level of a substance is between 7 and 14, it is considered a(n) a. acid b. solution c. base d. mineral

answer is c. base

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

How does an island of development promote economic development? a. islands of development contribute to mining industries because they continue to form mountains.b. islands of development have been ruled by dictators since the 1950s as part of an economicexperiment.c. islands of development promote international development by creating new islands.d. islands of development stimulate job creation in underdeveloped nations. select the best answer from the choices provided.0 000

In the middle east, a blank is a dry riverbed that often fills briefly with water after strong rains