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