The alveoli in the lungs, the nephrons in the kidneys, and the villi in the small intestines are all surrounded by capillairies. This allows the body to efficently exchange materials with what system?

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.