Which of the following describes the ultimate disposition of most energy in an ecosystem?
A)It is used to construct the bodies of decomposers. B)It is trapped as fossil fuels when producers die and become fossilized. C)It is continuously recycled back into the ecosystem. D)It eventually returns to space in the form of heat.
Net primary productivity in a terrarium could be estimated by
A)carefully controlling the amount of light entering it. B)counting the change in the number of plant species in it. C)weighing the terrarium at regular intervals. D)removing the primary consumers and weighing them at regular intervals.