this process helps to concentrate the urine and increase the volume of water in the blood. Aldosterone acts via a similar method as it acts to increase the production of 3 types of channels: 1) sodium channels.
This means that a new greenhouse costing $20,000 which has a useful life of 25 years would be depreciated at a rate of 8%, twice the straight line rate, of the undepreciated value each year as compared to taking 4% of the original cost each year as the annual depreciation allowance.
A greenhouse that is used to grow native plants and is an actual building (as opposed to just plastic over a frame), that is insulated, vented, and well designed can be close to a zero energy user or even an energy producer with the use of alternative energy production on site and the reuse of waste materials.