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