Biogeochemical Cycles and Energy Flow

Front

Role of detritivores in ecosystems

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Recycle nutrients for autotrophs

Front

Most vulnerable trophic level?

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Tertiary consumer level

Front

Energy transfer in food chain: grass -> grasshopper -> mouse -> snake -> hawk. Energy available to hawk from grass (100%)?

Back

0.01%

Front

Reservoir for carbon in the carbon cycle: plant/animal biomass, sediments/rocks, fossilized remains, or all of the above?

Back

all of the above

Front

Phosphorus enters ecosystems through:

Back

rock weathering

Front

Figure 42.2 shows a terrestrial food web. The biomass of C + D is:

Back

less than the biomass of A + B

Front

Energy flow in aquatic food chain:

Back

plankton → sand eel → striped bass → cod

Front

Carbon cycle diagram: Identify the arrow for CO2 release via combustion.

Back

arrow 1

Front

Element moving through all parts of the cycle:

Back

nitrogen

Front

Part of the carbon cycle:

Back

respiration -> photosynthesis -> organic decay -> coal formation