Cause of the weed resin
No it does not make you high but if you add Marijuana to the head(bowl) then you will get high.
Because THC makes your eyes more sensitive to light.
Sunlight
Usually, in most substances the speed of light is slower than in empty space.
The speed of light in any material medium is less than it is in empty space.
In empty space, ie in a vacuum
Water, nutrients and light
Yes. Plant life is known to benefit from UV light. An example is people who grow their own marijuana indoors under UV lights.
20 w grow light
12 hours of light 12 hours of dark
Empty space.Empty space.Empty space.Empty space.
Light waves can travel through empty space. You might say that the empty space is the medium in this case.