When The Temperature In A Thermostat Case Will

When the temperature in a thermostat case will exceed set, that is necessary, a mercury column in the relay, rising from heating, will switch off an energy source. Thus, will work a feedback mechanism. On the contrary, as soon as the system starts to be cooled, the mercury column decreases also it again includes a source of a power food. Some systems which support a constancy of the internal environment, are strictly regulated according to mechanisms of negative communication. These systems provide performance of the law of a constancy of the internal environment of an organism. But if in system all is counterbalanced, all is strictly commensurated, how there can be that additional energy and that additional "a building material" which should be spent for development and organism growth? Having asked this question, it is easy to come to a conclusion that the constancy of the internal environment, in essence, forbids organism development. In what image this contradiction between stability - a life basis, and development - a life source is authorised? To consideration of it we now also will pass.