. 15. All the things in an experiment that must be the same to make it fair are called?
A) controlled variables or constants
XB) independent variables
C) controlled experiments
XD) dependent variables

The answer is A.

Independent variables are the things a scientists changes and dependant variables are the things scientists measures for the experiment.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds