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