_______________ is the rate at which energy is converted by photosynthetic and chemosynthetic autotrophy to organic substances.Select one:a.Primary productivityb.Secondary productivityc.Tertiary productivityd.None of the above

THE RATE AT WHICH RADIANT ENERGY IS CONVERTED INTO ORGANIC SUBSTANCES BY PHOTO OR CHEMO SYNTHESIS IS DEFINED ASQuestion 14Answera.gross primary productionb.primary productionc.net primary productiond.secondary production

Net primary productivity is the primary productivity of an ecosystem, after subtracting energy lost inGroup of answer choicesdead plant tissues.inefficiencies of photosynthesis.inedible plant tissues.respiration by primary producers.respiration by primary consumers.

The measure of an ecosystem's rate of photosynthesis, converting solar energy into chemical energy, is its what productivity.

Net primary productivity is ________.the amount of detritus produced by an ecosystemthe biomass of producers minus that of consumersthe total biomass of an entire ecosystemthe energy used by plants to make biomass after respirationthe amount of energy consumers derive from producers

What energy transfer is used to determine the rate of primary productivity? Solar energy being converted into chemical energy Solar energy being converted to mechanical energy Thermal energy is converted to chemical energy Thermal energy is converted to mechanical energy