Many dictionaries mark a short vowel sound by using dots over the vowel straight lines over the vowel the vowel with no other markings a single dot over the vowel

Many dictionaries mark a short vowel sound by using the vowel with no other markings.

Explanation:

A word which does not allow the vowel in it to create that vowel's long vowel sound is called a short vowel.

To understand this better, we can take an example of the word 'cat'. Cat is a short vowel word because there is no long 'A' sound in it. A short vowel word does not have to a three letter word but it is the easiest example to understand since a short word does not allow the long vowel sound to dominate.

the answer is d. books are banned from the library. this is an example of censorship because the library did not want people reading the content of those books. the library censored the books by banning them.

the unsaturated fatty acid is a fat consist of one or more double bond in the fatty acid chain. if it contains one double bond then called as monounsaturated fatty acid however if, it contains more than one bonds called as a polyunsaturated fatty acid. true fatty acids are called unsaturated fatty acids as it reduces the risk of high blood cholesterol and good for health.