Tectonic plates are parts (pieces) of the outermost layer of Earth: the Crust. (the outermost part of the mantle is also often included in the plates). This means that the land in the middle of the plates is relatively stable while the borders of the plates can be in movement - after all this is where two pieces meet. Plate borders are where the vocanoes and Earthquakes often take place.
The rio grande river starts in the san juan mountains in colorado and continues 1,901 miles to the gulf of mexico.
The ice caps are melting due to global warming which is being affected by the polluted air
If the sin 30° = 0.5, then the cos 60° = 0.5
False...........................................