Which of these must occur during s phase of the cell cycle so that two daughter cells can be produced during m phase?
a-the dna must be replicated.
b-the chromosomes must be joined.
c-the cytoplasm must be separated.
d-the cell membrane must be expanded

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey