An inherited trait that increases an organisms chance of surviving and reproducing

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative