An ecosystem is defined by the O organisms living in a particular area
O climate of the region
O community and physical aspects of the area
O pioneet species that occup the area

organisms living in a particular area

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.

yes, because even though a theory has a  lot of evidence to support it, it is not always true