The human body tends to maintain constant internal conditions, which is the homeostasis. Irrespective of the level of physical activity or temperature of surroundings, the body temperature stays around 37 degrees Celsius. Any deviation from the narrow range of body temperature activity the feedback system to restore the homeostasis.
For example, during excess physical activity such as race, the body temperature is raised due to increased production of heat. The body's thermostat senses the deviation and signals the effector organs to restore the normal range of body temperature.
One of the mechanisms is secretion of sweat from sweat glands present in the skin. Evaporation of sweat from the body surface leaves the body's surface cool behind.
its not humus cause humus is sticky. its not sand cause when sand is wet its very gritty and hard. its not gravel because gravel is gritty. hope this helped
The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that B) tropical regions have more available water and higher levels of solar radiation.
