What type of TV needs to use an electron gun? 1. LED
2. LCD
3. 3D
4. Cathode Ray tube

A black-and-white TV has a single electron gun, a cathode Ray tube

i believe it would be c: tons.

homeostasis is the tendency towards a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. and this is how it applies to the integumentary system. back to top. skin functions in homeostasis include protection, regulation of body temperature, sensory reception, water balance, synthesis of vitamins and hormones, and absorption of materials. when body temperature falls, the sweat glands constrict and sweat production decreases.