Pretend that you recently turned in a paper for your science class and you have been asked to correct your problems with subject-verb agreement. Rewrite the paragraphs below, correcting any mistakes you find. In the midst of the vast, relatively unpopulated ocean, coral reefs is hotspots of biological diversity. Thousands of species is hosted within their colorful, protective borders. They support many of the fisheries that coastal communities relies upon and sustains local economies by providing billions of dollars of income from tourism.

The vibrant colors that attracts both fish and humans is the result of a symbiotic relationship between invertebrate coral polyps and colorful algae. Nutrients and protection is provided by corals to algae. In return, the algae provides the corals with sugars produced via photosynthesis.

In 1979, incidents in which coral hosts cast out their resident algae began to be reported on an unprecedented scale. This occurrence, known as coral bleaching, leave the coral a bleached white color because of the ejection of the colorful algae. Bleaching events is not necessarily lethal to corals. However, if bleaching occurs over a prolonged period of time, the coral host will eventually dies.

In the midst of the vast, relatively unpopulated ocean, coral reefs are hotspots of biological diversity. Thousands of species are hosted within their colorful, protective borders. They support many of the fisheries that coastal communities rely upon and sustain local economies by providing billions of dollars of income from tourism.

The vibrant colors that attract both fish and humans are the result of a symbiotic relationship between invertebrate coral polyps and colorful algae. Nutrients and protection are provided by corals to algae. In return, the algae provide the corals with sugars produced via photosynthesis.

In 1979, incidents in which coral hosts cast out their resident algae began to be reported on an unprecedented scale. This occurrence, known as coral bleaching, leaves the coral a bleached white color because of the ejection of the colorful algae. Bleaching events are not necessarily lethal to corals. However, if bleaching occurs over a prolonged period of time, the coral host will eventually die.

Explanation:

The subject-verb agreement is a grammar rule according to which the subject and verb must agree in number. This means that, if the subject is singular, the verb must be singular as well. If the subject is plural, the verb should be too.

For example, reefs is a plural noun. It needs to be followed by a plural verb, which means that the verb is is incorrect. Here, the plural form are should be used. The principle is similar in the rest of the cases, which I've written in bold letters and underlined. The number of the verb needs to be changed.

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one thousand and one nights, also called the arabian nights is a collection of middle eastern tales compiled in arabic during the islamic golden age, dated from the 8th to the 14th century. this collection was compiled of largely middle eastern and indian stories with an uncertain date and autorship whose tales such as aladdin, ali baba and sinbad the sailor -these ones were the most popular ones, the ones that have almost become part of western folklore.

as in much medieval european literature, the stories contained in this collection are set within a frame story. its scene is central asia, as known as "the islands or peninsulae of india and china", where king shahryar kills his wife after discovering her infidelities and as well as any other who betrayed him.   then, loathing all womankind, he marries and kills his new wife each day until no more candidates could have been found. his vizier had two daughters, scheherezade and dunyazad. the elder one -scheherezade- having devised a scheme to save herself and the others insisted that her father needed to give her in marriage to the king. each evening, she used to tell a story leaving it incomplete and promising to finish it the following night. the stories kept the king very interested, so eager to hear evey ending of each story, that he puts off her execution from day to day and finally he decided to give up with his plan. these stories are contained within the collection of 1001 nights, the bulk of the text is in prose, although verse is usually used for songs and riddles to express better the heightened emotion of them.

but it is sometime nessary to hit key points or subjects   but is sometimes to much reveiw if there was a way to slim down the redone work it would improve for every body.