Change happen to happened because it is past tense
Answer:
I think option D is the answers
Function of the nucleus<span> is to maintain the identity of genes and to control the activities of the cell, so it is the cell's control center</span>
Answer:
1,2,4,3 (title slide, content slides, concluding slide, references)
Explanation:
As we all know the Title is first.
Then we go ahead and explain whatever it is we're suppose to explain.
After that, you conclude your explanations
Finally, you give credits to where you got your answers from.
The underlined verb is becoming because when you look at the is becoming you see that it is in present tense and active voice. The is carries the present tense and the becoming carries the progressive aspect.