Amniotic Egg

An amniotic egg is produced only by tetrapod vertebrates including mammals, reptiles, and birds. Amniote embyos, whether laid as eggs or carried by females, are protected and aided by several extensive membranes. This reptile and vertebrate is a female snake that lays such eggs.

Deciduous Tree

Something that is deciuous, tends to fall off and is typically used in reference to tress such as this photo. Trees tend to lose their leaves seasonally through a natural proccess of shedding.

Adaptation of an Animal

The cows in this picure live on a farm where they must adapt to what they have, including grass, a pond, and other organisms. For an animal to adapt to its enviroment, it must alter in structure or function to become better fit to survive.