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