Rock surfaces provide a challenging habitat for a broad diversity of micro- or small-sized organisms. They interact with each other forming complex communities

Rock surfaces provide a challenging habitat for a broad diversity of micro- or small-sized organisms. They interact with each other forming complex communities

Early readers examine how volcanoes, earthquakes, and erosion change the surface of the Earth.

Drooling fanatic, n. 1. One who drools in the presence of beloved rock stars. 2. Any of a genus of rock-and-roll wannabes/geeks who walk around with songs const

During geologic spans of time, Earth's shifting tectonic plates, atmosphere, freezing water, thawing ice, flowing rivers, and evolving life have shaped Earth's