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
Dead plants
Soil
Animals
Sunlight
Resilience
Food webs
Boundaries
Scale
a collection of organisms and materials that interact
the place where animals live
only found in forests
unchanging, fragile systems that are easily damaged
Meter
Kilometer
Centimeter
All of the above