Aflight stimulator that astronauts prepare for a shuttle launch is an example of a (an)

Acontrol during an experiment. might change remains constant does not exist does change

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.

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.