M = Muralism C = Commensalism

P = Parasitism

1. A tick living on a dog and taking its blood for food.

2. A tapeworm living inside a cow and absorbing the cow's nutrients for food.

3. A bird building a nest in a tree.

4. Orchids growing in tall canopy trees to get sunlight.

5. Bacteria living on human skin.

6. Bees use a flower's nectar for food. And they carry a flower's pollen to other flowers, allowing flowers to reproduce. ​