Chlorophyll is the pigment that makes plants green. The leaves on this plant are green, representing chlorophyll.

The cuticle layer of a plant limits the loss of water. This can be found in wax plants.

Lipids are fatty acids. Any sort of vegetable oil (oil in general), and butter are lipids that can be commonly found in homes. This extra virgin olive oil represent a lipid.

The Ruby-Throated hummingbirds in this picture represent territorial behavior. They represent territorial behavior over the hummingbird feeder. They’re both wanting to drink the sugar water. Therefore, they’re being territorial over who gets to drink.

These Ruby-Throated hummingbirds represent population. They represent population by occupying the area of licking creek.