The major theories of color vision were first proposed:
A. in the 1800's, based on behavioral evidence only.
B. in the 1930's, based on some psychophysical data and lesioning studies.
C. in the 1960's after Hubel and Wiesel's pioneering research.
D. in the 1990's when technologically advanced brain imaging studies could be conducted.

Hello! i believe that it is okay, but you should limit on how much you go in a jacuzzi, hot tub, sauna etc. the rise in temperature may effect the development of you unborn baby and could cause some birth defects most likely in the first 3 months or 12 weeks of pregnancy. the recommended amount of time to be in a jacuzzi while pregnant would be 10  minutes or less.i hope this !

Organic -  derived from plants or animalscorrosive -  capable of destroying by a chemical action  particulate -  tiny particle that can be dispersed in a gas