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