Meter
Kilometer
All of the above
Centimeter
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
Conditions an animal needs to grow and reproduce
Scale
Resilience
Food webs
Boundaries
Soil
Animals
Sunlight
Dead plants
only found in forests
the place where animals live
unchanging, fragile systems that are easily damaged
a collection of organisms and materials that interact