Answer:
A rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non zero denominator q.
In a parallel connection, if something messes up, the appliance will not be damaged because the current no longer reaches it.
Answer:
It illustrates INSTRUMENTATION as a threat to the internal validity of the experiment.
Answer: It is C
Explanation: takes less time to transport goods(decreased) leading to more trade (increased)