sexual original is a mean of original & the reproductive system is used for sexual reproduction ->  the reproductive system is used for reproduction  producing grandfather ensures the termination of a reflex & reproduction produces offspring -> reproduction ensures the continuation of a plant or animal species reproduction ensures the continuation of a plant or animal species  the reproductive convert is used for original & reproduction ensures the continuation of a plant or animal species -> the reproductive system is used for continuing the species the reproductive system is used for continuing the species  the reproductive tightening is used for continuing the chemical & if something is used for a performing a process, then performing that process is a function of that something -> a function of the reproductive system is continuing the species