2.54 transpiration is the evaporation of water from surface of the leaf

1. Liguid H2O--Heat -->Gas H2O
2.(heat=sunlight-->converted to heat as absorbed by plants structure)
   -unit of light intensity- Lux

3.H2O (l) changes to H2O (g) right above the stomatal pore -
4.diffuses through Stomatal pore

Humidity:
-above Stomatal pore is 100%
-surrounding the leaf -usually less than 100%
-humid day-->low rate
-windy day-->Faster rate-->low humidity
sunny, dry, windy--> greatest increase in rate of transpiration
-