So, when you want to use a word to express a change or to describe an action, choose affect. Affect is almost always used as a verb to mean to influence someone or something, rather than to cause ...

Matching subjects and verbs sounds easy. But confusion can arise when collective nouns are used as subjects. A collective noun is used to refer to an entire group of persons, animals or things; it ...

Here the noun 'species' does not change form to show ... are taking in the singular or plural meaning and make sure to change the verb. Other examples include: economics, sheep, politics ...