During her first prenatal visit, latoya's doctor explains that the prevent(s) the skin from chafing during the long months spent bathing in the amniotic fluid.

Vernix

Explanation:

Vernix is a coating around a newborn baby. It is a waxy, white cheese-like substance. This is made up of some dedicated cells. It is also called a protective covering around the baby. It is found on baby during development and after the birth of a few hours of a baby.

The composition that found in this fluid is :

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.