Question

what are the variables in plant growth

Answer 1

Are there choices ?

Answer 2

Do you know what are independent and dependent variables ?

Answer 3

Possible plant variables:
Room temperature day and night.
Light – intensity (wattage) and duration (how many hours).
Humidity in room
How much water given how often and was the water room temperature or cold
How much fertilizer, how often, what N:P:K ratio
What soil is used in the pots does it list the ingredients

Answer 4

if you are still online. not sure if you are but ^ those are some of the possible variables