A geosynchronous satellite moves directly above the equator in a circular obit of radius 4. 22 × 107 m, which is about 6. 6 earth radii. It takes such a satellite 24 hours to orbit the earth, and thus it remains directly above a fixed point on earth, which is useful for communicating since a receiving antenna on earth can point to a fixed direction in the sky.

The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome