Taipei, Taiwan has the world's fastest elevators. The peak speed can be 16 m/s while the average speed is 15 m/s. How can the peak speed be higher than the average
speed?

In psychology, a person who thinks that upbringing and environment are much more important than genes is more on the side of in the nature versus nurture debate.the answer in the blank is letter b which is nature. they are more on the nature and environmental side than the genetic side of species.

Dust and gases contract.

Repeated trials allow you to calculate a mean which can reduce the effect of random errors to make your results more precise.your results will also be reproducible therefore if someone else did the same experiment they'd get the same results which would make your results more reliable.