This is what I got as my answer !
Answer:
Which sentence is written in the active voice?: you didnt add any sentances, therefore this question cant be answered correcly
Answer: An unnecessary pronoun is one whose antecedent is already explicit as the subject in a sentence.
Example: Michael, the man I talked to you about, he wants to buy my car.
The present perfect tense is the word Threw
Answer:
A. The ocean becomes more acidic when it absorbs more carbon dioxide