In large cities, much of the land is covered in asphalt and concrete. these materials keep water from touching the soil underneath. what effect do these materials most likely have on streams and rivers near cities?

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

The solid that is formed and usually sinks to the bottom of a solution is the

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?