In what way do investigations build scientific knowledge?

Investigations or experiments help to build scientific knowledge through the findings that these experiments or investigations help to build. The body of knowledge is created through the work of numerous individual and team scientific investigations and experiments into unknown phenomenon. This work culminates in helping to build scientific knowledge. 

Indulgences were a way of tricking catholics into giving the church money. johan tetzel was preying on the citizens of germany by making them think that the purchase of papal indulgences was legitimate, and necessary. they demoralized the catholic church, as well as the catholic people. indulgences taught that in order to achieve salvation one did not have to be good, he simply must have the money to buy an indulgence.