Why do the rules for marking stress and intonation keep changing? Don't we have any fixed rules?

Iquickly discovered that the tour guide, as well as the park rangers, were tired of people's abuse of the grand mesa's precious resources, which is protected by the state of colorado. current measures allow colorado to prosecute people who do not follow park rules.which verb in the students rough draft is incorrect and needs to be changed during the editing process? a. discoveredb. werec. isd. allow

In the following sentences, commas are needed after which words? when the clark family planned their summer vacation to hell’s canyon they didn’t plan on having quite so many adventures. from the start they had to deal with a broken-down van a sick baby and torrential rains.

Kayla have 886 folders and ana have 337 folders if i subtract 337-886 how many is in total? ? 886 - 337–––––