Which answer best describes how the circulatory system and respiratory system work together to maintain homeostasis? Group of answer choices A. Carbon dioxide is brought into the body and transported to each cell while oxygen is transported to the lungs and removed. B. Oxygen is brought into the body and transported to each cell while carbon dioxide is transported to the lungs and removed C. Lungs bring nutrients into the body and the blood absorbs those nutrients. D. These 2 systems do not work together.

As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.

Which of the following is the best name for mgcl2

When using the scientist method, which step comes last?