Answer:The oceans are changing because of the global ice melting and the amount of pollution that has been introduced to the ocean over the years.
Explanation:Due to the global climate change oceans are changing and due to how ships pollute the environment also. Considering that petrol waste is non biodegradable, it stays longer and affect the life in the oceans where fishes are likely to die due to that.
Purpose=The reason for writing a text
Audience=The intended readers of a text
Tone=The attitude the writer expresses
Style=The writers way of using language
I think it's a because every word has a subject and a verb
