Charles Spearman presented the two factor theory of the intelligence. He developed a mechanism or method that was based on the analyzing factors, and testing variables to develop statistical correlation in between related variables that are tested.
His idea was to develop a method to make an index by a single test to measure or evaluate the mental capacities so the most enthusiastic person would be Spearman.
Explanation: malnutrition is essentially the lack of nourishment. An imbalance (less or more) of one or more nutrients certainly has the capacity of causing health issues. And as such it includes deficiencies, overabundance and imbalances.
Homeostasis is maintained by sweating because it helps the human body cool down when it is warmer than its normal healthy temperature. The water sweating puts on the skin absorbs a large amount of heat from the body as it evaporates. Hope this helps.