A model that shows the amount of energy that is passed on at each trophic level of a food chain is called ..

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?

In 2001, records showed that local stocks of fish were down worldwide. yet, records of harvests indicated that fish were being taken at records rates. what was actually happening?

49 ! how are energy cycles and growth cycles related?