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