Problem: Process:  - Air is pulled into the lungs - Oxygen moves from the lungs into the bloodstream - Air is pushed through the vocal chords - A person talks - Other air is pushed out of the lungs into the environment.  suppose there is an obstruction in the bloodstream happens, how will it affect the body is unable to filter air.  Which of the following is the supposed perturbation?  - directly impacting a step of the process - indirectly impacting a step of the process - not impacting any step of the process

A: indirectly impacting a step of the process


Problem: Process:  - When water freezes it becomes 10% bigger, or takes up 10% more space - As water expands it puts great pressure on the walls of anything containing it, including any rocks which happen to be surrounding it - The force of the pressure exerted on the rock surrounding it is enough to wedge the walls of the crack farther apart, thus expanding and deepening the crack - Clay expends when wet like ice does - This causes rock to break apart - Some plants like mosses and lichens are capable of growing without soil on bare rock - When they do this their roots penetrate pores and crevices and cause rocks to split apart as the roots force their way down through the rocks -   suppose the rocks are in a climate that does not usuallly experience freezing weather happens, how will it affect force is imposed on the rocks more often.  Which of the following is the supposed perturbation?  - directly impacting a step of the process - indirectly impacting a step of the process - not impacting any step of the process

A: indirectly impacting a step of the process


Problem: Process:  - Water in the clouds becomes very cold - The cold water forms ice crystals - The ice crystals grow by absorbing surrounding water droplets - Form snowflakes - The snowflakes fall to the ground.  suppose less ice crystals form happens, how will it affect less water droplets are absorbed.  Which of the following is the supposed perturbation?  - directly impacting a step of the process - indirectly impacting a step of the process - not impacting any step of the process

A: directly impacting a step of the process


Problem: Process:  - Some of the rock in the ground is made of limestone - Over long periods of time rain can hit the limestone - And cause a acidic reaction - The limestone will slowly disintegrate - A large gap with be where the limestone was - Result in the cave.  suppose there will be smaller caverns created happens, how will it affect MORE or LARGER caverns.  Which of the following is the supposed perturbation?  - directly impacting a step of the process - indirectly impacting a step of the process - not impacting any step of the process

A: