You notice that a group of students went on a hiking trip to Cockscomb basin. They are asked to climb a hill, by the time they reach the top of the hill some of them are almost out of breath, while others don't even make it to the top of the hill. Only a few seem not to be affected much by the climb. Plan and design an experiment in which you offer a possible explanation for the differences in breathing rate.

It depends on the stamina of the individual.

Explanation:

The possible explanation for the differences in breathing rate is related to the daily activities of the individuals. For example, if the daily activities of the people are hard so it has big stamina and experience no difficulty in the climbing of a hill while those people who has little hard daily activities have low stamina and their breathing rates increases while climbing a hill. Where as those people who perform no daily activities have no stamina and will be unable to climb on the hill.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.