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