Suggest a rule that geologists should follow when they date rocks based on the radiometric ages of mineral grains inside the rocks.

Distance that the transcontinental railroad covered from omaha to san francisco.

The african continent is home of the worlds largest desert and longest river . t or f

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water