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