Is rust eating a hole in a metal bucket living or nonliving?

The correct answer will be- non-living.

Explanation:

The rust is a chemical compound formed through a process called rusting by the oxidation of iron in the presence of air and water.

The formation of rust is a chemical process or a metabolic process which leads to the corrosion of iron and iron erodes away or rust eats the iron.  It is not considered a living reaction as it lacks other features of living beings like not takes place in a cell as well not a heredity feature.

Thus, non-living is the correct answer

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.