For the global positioning system (gps) to work, at any given time there must be at least (two/three) gps satellites above the horizon.

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

Explain why the rate of urbanisation is in the way it is between developed and undeveloped countries.

The rwandan patriotic front and the interahamwe were a. relief agencies b. military groups c. political parties d. nonprofit organizations select the best answer from the choices provided. a b c d