a collection of organisms and materials that interact
unchanging, fragile systems that are easily damaged
only found in forests
the place where animals live
Resilience
Boundaries
Scale
Food webs
Conditions an animal needs to grow and reproduce
Flow of energy from one organism to another in a food web
Cycling of nitrogen between soil, water, and the atmosphere
Living and non-living things in an area and their interactions
Centimeter
Meter
Kilometer
All of the above
Animals
Dead plants
Soil
Sunlight