Bio 3.3-3.4 Flow of Energy and Matter

series of organisms transferring energy by eating and being eaten

• food chain
• food web
• trophic level
• ecological pyramid
• human activity

network of food chains

• food chain
• food web
• trophic level
• ecological pyramid
• human activity

algae, single-celled aquatic photosynthesizers

• phytoplankton
• zooplankton
• biomass
• geo-

tiny swimming animals and protozoa

• phytoplankton
• zooplankton
• biomass
• geo-

one step on a food chain or web

• food chain
• food web
• trophic level
• ecological pyramid
• human activity

shows the relative amount of energy in each trophic level

• food chain
• food web
• trophic level
• ecological pyramid
• human activity

amount of living tissue in each trophic level

• phytoplankton
• zooplankton
• biomass
• geo-

elements passing from organism to another through the biosphere

• biogeochemical cycles
• biological processes
• geological processes
• physical processes
• chemical processes

earth, rock

• phytoplankton
• zooplankton
• biomass
• geo-

chemical substances an organism needs to sustain life

• nutrients
• nitrogen fixation
• denitrification
• limiting nutrient