Scientists can use light-years to measure the size of the universe. TRUE or FALSE

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

Iii-eneral sciencewhich of these is the best explanation of how a smooth round stone became smooth? a continuous freezing and thawingbvolcanic actioncit fell off the side of a cliffdit was in a stream for a long time.