After being put in these environments for the same period of time, these plants are put under the light for the same amount of time as well to observe the photosynthesis.
(these plants; are put; under the light; T:for the same amount of time; T:After being put in these environments for the same period of time)
these plants
are put
under the light T:for the same amount of time T:After being put in these environments for the same period of time