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