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