Why are parent material and time considered as passive control factors

1.	Why are parent material and time considered as passive control factors in soil formation?
Answer» <html><body><p></p>Solution :(i) Parent Material: It is a <a href="https://interviewquestions.tuteehub.com/tag/passive-597006" style="font-weight:bold;" target="_blank" title="Click to know more about PASSIVE">PASSIVE</a> factor in soil formation. Parent materials can be any insitu or on-site weathered rock debris or transported deposits. Soil formation depends upon the texture, structure as well as mineral and chemical <a href="https://interviewquestions.tuteehub.com/tag/composition-22493" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOSITION">COMPOSITION</a> of the rock debris/ deposits. <br/>(<a href="https://interviewquestions.tuteehub.com/tag/ii-1036832" style="font-weight:bold;" target="_blank" title="Click to know more about II">II</a>) Time: It is the passive controlling factor in soil formation. The length of time the soil forming processes <a href="https://interviewquestions.tuteehub.com/tag/operate-586874" style="font-weight:bold;" target="_blank" title="Click to know more about OPERATE">OPERATE</a> determine maturation of soils and profile development. A soil becomes <a href="https://interviewquestions.tuteehub.com/tag/mature-546881" style="font-weight:bold;" target="_blank" title="Click to know more about MATURE">MATURE</a> when all soil becomes mature g processes act for time developing a profile.</body></html>

Why are parent material and time considered as passive control factors in soil formation?