ESS vocal wk 28

To damage, injure

Test the performance of an experiment, access suitability

A factor which is meant to be changed in an experiment to determine the effects it has on an experiment

Combine in such a way as to enhance the qualities of another

Roughly calculate the number or extent of, approximate

To give or allow, permit

To be changed by something, have an effect on

2 or more things that have direct involvement

Free from outside control, self sustaining