Plans should be repeatedly evaluated during implementation to keep them on track. Resource requirements in regard to finances, personnel and time frame Its difficult to define resource requirements since interventions depend very much on the context in which they are implemented. The time frame is also impossible to define. An integrated approach to the environmental problems of household energy use in less developed countries can, however, potentially be a source of financial resources. Environmental problems make their impacts on various geographical scales.
Some environmental problems are local such as carbon monoxide emissions in a room.
Some impact a region, some a continent and some environmental problems have a world-wide impact. Money from international funders for the less developed countries is getting scarce. One area of funding is however growing, and that is funds to tackle world-wide environmental problems. The most notable is that of global warming. Many countries are worried about it and have set up initiatives for reducing world-wide emissions of gases that contribute to this warming.