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