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