C Chromosomes break at centromeres,and sister chromatids move to opposite ends of the cell.
I thinking A. or B. but im sure it one of them. that's a 50% chance.
starts with sunlight and photosynthesis if you are talking about plants
Answer:
The cell membrane is permeable to small solutes to let them easily diffuse in and out of the cells.
It could be they want the answer that they could not adapt to the changing climate. they where wiped out just by an asteroid though
