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