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