More and moor are both spelt correctly, but mean different things. Do you know what they mean? Which of the following is correct?
Hopefully, you will know that the second option is correct. A moor is an expanse of land and more means greater. It's important to use the correctly spelt word when writing, otherwise your audience can very easily get the wrong end of the stick. If you are not sure of the spelling of a particular word, if you find a synonym of that word and look it up in a thesaurus. Your word is bound to be in the list!
Improve your spelling skills by playing this 11-plus English quiz.