The purpose of the government performance and results act is to improve the confidence of Americans in the ability of the federal government to carry out agency missions reliably
Answer:
controlled experiments
Explanation:
Experiments in which all variables are identical except for one are called controlled experiments. This where an observer tests his hypothesis by looking on changes that were brought about by one variable. The results are always dependent on one adjusted variable.
The surface tension is the result of the tendency of water molecules to attract cohesion.