AP BIOLOGY

Detailed explanation-1: -Homeostasis is maintained by negative feedback loops. Positive feedback loops actually push the organism further out of homeostasis, but may be necessary for life to occur. Homeostasis is controlled by the nervous and endocrine system of mammals.

Detailed explanation-2: -Heat of vaporization is the amount of energy required to convert liquid into gas. This property helps humans maintain homeostasis of body temperature by evaporation.

Detailed explanation-3: -As ambient temperatures increase, homeotherms use evaporative cooling through sweating and/or panting to regulate body temperatures, and also vasodilate surface blood vessels to promote heat loss (Robertshaw 2006).

Detailed explanation-4: -They absorb water from the soil through their roots (if they have roots), use this water to maintain homeostasis, and whatever is left evaporates from open stomata across the epidermis of the plant.