Which measurement gives the most accurate number for a population in an area? a) add the biodiversity of an area to the carrying capacity. b) add the individuals who come into an area because of reproduction or immigration. c) add the individuals living or born in an area and subtract those who die. d) subtract the animals that die from the total carrying capacity.

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.