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