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