Alchemy was practiced

a: middle ages
b: modern chemists
c: renaissance scientist

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false