Kilometer
Meter
Centimeter
All of the above
Soil
Dead plants
Sunlight
Animals
a collection of organisms and materials that interact
the place where animals live
only found in forests
unchanging, fragile systems that are easily damaged
Boundaries
Resilience
Scale
Food webs
Flow of energy from one organism to another in a food web
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