What happens to water vapor after it gets evaporated?
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what are the 3 factors that influence stream velocity?

Well for one, water vapor goes into the clouds, which turns to rain,

as for the 3 factors it's
One factor is Gradient,.Another factor is the Discharge,the last being Steam

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.

Below 0 would be the most difficult