"The hound is running for his dinner, the rabbit is running for his life." - Aesop

Supplementary videos

Trophic cascade in Yellowstone: wolves and deer and forests and rivers
A golden detritivore: this top carnivore also scavenges on carrion
Operation Dung Beetle: decomposer or detritivore? (David Attenborough)
Cordyceps: a killer fungus: is it a decomposer? Parasite?
Lancet fluke: mind control parasite
Fossil Fuels 101: how they were formed
Hydraulic Fracturing and Horizontal Drilling for Natural Gas (Chevron infomercial)
Extracting oil sands for the Keystone XL pipeline (Washington Post)

Extra credit readings

• Eat more anchovies, herring and sardines Guardian News 2/18/11
• NZ flatulence tax outrages farmers BBC News 6/20/03
• Cow Power Could Generate Electricity For Millions ScienceDaily 7/25/08

Additional material

• How much food have you eaten?
• Pure water in a bottle: can you escape the water cycle?