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