Dead plants
Sunlight
Soil
Animals
Kilometer
Meter
All of the above
Centimeter
only found in forests
unchanging, fragile systems that are easily damaged
a collection of organisms and materials that interact
the place where animals live
Cycling of nitrogen between soil, water, and the atmosphere
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
Scale
Food webs
Resilience
Boundaries