Gradient = vertical difference in elevation / horizontal distance. So, to calculate the average gradient along the stream from the red dot at B to the red dot at A (or vice versa) two facts need to be known: The difference in elevation between B and A. The distance along the stream from B to A.
Yes.
6CO2 + 6H2O → C6H12O6 + 6O2
I’m pretty sure it’s c. protostar
A burglary is something planned and detailed thoroughly (breaking into a bank). a robbery is something kind of wreck less (robbing a gas station)