occurs as airborne molecules pass over five million nerve fibers with the receptor proteins on the surface of these fibers being stimulated by these molecules, causing signals to be sent to the brain.

Hearing

Touch

Smell

Taste

All these senses can occur as airborne molecules pass over five million nerve fibers with the receptor proteins on the surface of these fibers being stimulated by these molecules, causing signals to be sent to the brain.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.