Animals
Sunlight
Dead plants
Soil
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
Living and non-living things in an area and their interactions
unchanging, fragile systems that are easily damaged
only found in forests
the place where animals live
a collection of organisms and materials that interact
Centimeter
Meter
All of the above
Kilometer
Boundaries
Food webs
Scale
Resilience