I. Mark each item below with the letter that corresponds to its part in an ecosystem.
• Individual (I)
• Population (P)
• Community(C)
• Abiotic Factor (A)
• Ecosystem (E)


Rocks ____
Mountain ___
Ponds ____
Water ____
Eagle _____
Clouds ____
Mice _____
Great white shark ____
Oak tree, ants, woodpecker ___
Cow _____
Ants ____
Cow, grass, flies _____
Oak tree ___
Eagles _____
Jelly fish ____
Coral Reef _____