It's called a *Prepositional Phrase.
I can explain further, if you like.
Answer:
4.
Explanation:
I think it is number 4 because for a little bit it said that it wasn't a fish so I think it was comparing the whale to the fish.
1.I regularly drudge five days a week, yet I usually sleep through the weekends.
2. I regularly drudge five days a week, and need sleep through the weekends.
Answer:
eukaryotic is your answer