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