Three wax palm trees are kept at different humidity levels inside of 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 independent variable, the dependent variable, the control group, and the constant?

I'm sorry to hear that. i will try to answer your other questions if it is within my ability. : )answers: my favourite colour is black.my favourite food is pasta.my favourite school subject is english, but i do also like lunch time.my least favourite subject is history as well as geography. i have currently garnered a quite equal hatred for both of the subjects.what about you? well, you for the points. : )