Respuesta :
Answer:
I.V. Humidity level
D.V. height of trees
C.V. same type of tree, same greenhouse,
Explanation:
The independent variable, the dependent variable, the control group, and the constant for the experiment would be as follows:
- Independent variable: humidity levels
- Dependent variable: height of the trees
- Control group: one tree left outside in normal condition
- Constant: not stated
The independent variables are variables supplied and manipulated by the researchers.
The dependent variables are variables that are affected by the manipulation of the independent variable. They are the actual variables to be measured in experiments.
Control group is the group that serve as the baseline on which the experimental group is compared.
Constants are variables that remain unchanged for all the subject groups in a research or experiment.
More on different variables in research can be found here: https://brainly.com/question/10415158