The hypothesis of what was that all the continents once were joined as a single super continent and have since drifted apart

How are the high islands of the pacific formed? a. by connected coral reefs called atolls b. by lagoons c. by moving glaciers d. by underwater volcanoes

Which of teh following would explain the importance of the trans-siberian railroad to russia's economy? (schoology test)

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity