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