Fran finds a dark-colored rock that she identifies as basalt. Which property gives the rock its dark color? its shape
its banding
its grain size
its mineral content

The right option is; its mineral content

Mineral content is the property of the rock that gives the rock its dark color.  

Minerals are the building blocks of rock and rocks mainly derive their colors from them. Most rocks contain various types of minerals that are joined together while few rocks contain just a type of mineral. Rocks that their mineral constituent is pyroxenes, olivines or amphiboles are usually dark in color while rocks that have much of feldspar and quartz are usually light in color.

Explanation:

i would expect light rain in pittsburgh throughout the following 24 to 48 hours. the lower/falling weights in urban areas toward the west demonstrate that a low weight framework is moving from west to east toward pittsburgh. low weight frameworks are ordinarily connected with precipitation. the way that you don't see a major drop in temperature in the more western urban areas demonstrates the low weight framework is moving with a warm front, so just light rain would be normal. substantial downpours or progressively vicious climate is just typically connected with chilly fronts, where the warm air is pushed up and over a cool front quickly. this quickly rising air (convection) is what gives you heavier torrential downpours, and other conceivably serious weather conditions.