Different rose bushes are grown in a greenhouse for two months. The number of flowers on each bush is counted at the end of experiment

What is the standardizing variable?

Question

Different rose bushes are grown in a greenhouse for two months. The number of flowers on each bush is counted at the end of experiment

What is the standardizing variable?

aaronq · Answer

the types of flower? roses  or maybe the environment? the greenhosue

babybritt002 · Answer

@aaronq Whats the answer ?

aaronq · Answer

idk either of the two could be. it's not clear to me

babybritt002 · Answer

@aaronq  can you help me with is one 

Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. Height of the tree is measured once a week.

What is the standardizing variable?