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