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