irreversible – adj. impossible to change back to a previous condition or state

consequences – n. something that happens as a result of a particular action or set of conditions

diminish – v. to become or to cause (something) to become less in size, importance, etc.

region – n. a part of a country, of the world, etc., that is different or separate from other parts in some way

fraction – n. a part or amount of something

cattle – n. cows, bulls, or steers that are kept on a farm or ranch for meat or milk

vegetarian – adj. non-meat eating