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