Female New Zealand mud snails are able to produce viable offspring that develop into mature adults from unfertilized eggs.

It is called parthenogenesis

Explanation:

This is because parthenogenesis is a type of reproduction where the female produced egg develop into offspring without fertilization from the sperm of the male parent. It is a type of asexual reproduction in which unfertilized egg from the female develop into offsprings either both sexes or male only or female only.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.