Explanation: An adverb is a part of speech that is used to modify a verb, an adjective or another adverb. An adverb generally makes reference to how, when, where or to what extent something happened. Moreover, many adverbs end in "-ly". In this sentence,<u> "yearly" ends in "-ly" and it is describing a verb ("migrate")</u>. Furthermore,<u> "yearly" is an adverb of frequency</u> because it has been used to express how often Canadian geese migrate.
Explanation: it's the most intense part of the whole story and if you stop right there and it leaves you off of cliffhanger then you definitely know it's the climax