Answer:
The error is in the use of "was" before the subjects "pollution and disease".
The incorrect verb is "was".
The correct sentence will be <em>"pollution and disease were to blame for the decimation of the Chesapeake Bay oyster population in the 1990s"</em>.
Explanation:
When we say the subject-verb agreement, then it means that the helping verb used is dependent on the number of the subject(s). This means that if the subject is singular, then the verb will be singular, and if it is plural, then the verb also becomes plural.
Now, taking the given sentence, we can see that the subjects are <em>"pollution and disease"</em>, which is plural in nature. The use of "and" makes it plural, thereby making the use of the singular verb "was" wrong.
Thus, the correct sentence will be <u><em>"pollution and disease were to blame for the decimation of the Chesapeake Bay oyster population in the 1990s".</em></u>
Of grammar rules but the basic ones refer to sentence structure and parts of speech, which are noun, pronoun, verb, adjective, adverb, preposition and conjunction. Let’s look at the way sentences are put together and the words that form them.

Basic English Grammar Rules
Some of the most basic and important English grammar rules relate directly to sentence structure. Some of these rules specify that:
A singular subject needs a singular predicate.A sentence needs to express a complete thought.
Another term for a sentence is an independent clause.
Clauses, like any sentence, have a subject and predicate too. If a group of words does not have a subject and predicate, it is a phrase.If they can stand alone and make a complete thought, then they are independent and called sentences.If they do not express a complete thought, they are called "dependent clauses." An example of a dependent clause, which is not a sentence, is “when i finish my work”.
She thinks that it is a god given gift and incest is ok
Answer:
I don't understand
Explanation:
Is this the 2nd part of a previous question ?
