What is homeostasis and what does it have to do with the body system

Homeostasis is simply keeping the environment under your best control. Much of that is under the auspices of the central nervous system and peripheral nervous system, but also your autonomic system as well (both sympathetic and parasympathetic components). While the blood system helps with maintaining nutrition levels and waste removal, the lymphatic system (with twice the fluid in it than the cardiovascular system) also helps maintain a recycling of materials needed for detoxification and molecular repair production.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.