Which scenario describes a random error? a student stands and looks down to read a graduated cylinder. a sudden storm raises the humidity in a lab for an hour. a spring scale is not zeroed properly throughout a investigation. a power supply is set to a lower setting during an experiment.

How does the principle of federalism affect the u.s. government? a. it guarantees that the united states will always be a representative democracy b. it ensures that the state governments have greater authority that the federal government c. it creates both separate and overlapping powers for the federal and state governments d.it divides the federal and state governments into three branches