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