Please answer quickly! I don’t understand how we are supposed to do this question.

Which of the four major uses is predicted to change the least by 2020?

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?