The controlled variables in this experiment were that the same plants were used, as well as the same amount of water and sunlight.
(The controlled variables in this experiment; were; that the same plants were used, as well as) Context(The controlled variables in this experiment were,List([0, 48))):(the same plants; were used; )
The controlled variables in this experiment were,List([0, 48))
The controlled variables in this experiment the same plants
were were used
that the same plants were used, as well as