Answer:
Homeostasis is the constant condition maintained by the body to perform essential functions. The human body has many homeostasis regulatory mechanisms like the body maintains its temperature at 37°c by sweating in summer and shivering in winter to maintain the functioning capability of our enzymes.
The human body maintains the water balance of the releasing and stopping secretion of hormones that affect water reabsorption. When glucose concentration becomes high pancreas release insulin that reduce the blood glucose level.
Blood acts as a buffer to maintain the acid-base balance so that oxygen can circulate properly in between the body organs and enzymes work efficiently.
So homeostasis mechanism is very essential for the human body for proper functioning and without it, humans can not survive.