The right answer is angiosperms
One of the major turning points in this plant history is undoubtedly the appearance of angiosperms (flowering plants) towards the early Cretaceous. The first dinosaurs lived in a plant universe that is noticeably different from the one we know today because it is dominated by ferns, cycads, conifers and plants that are now extinct.
Actually the sun does change, you are comparing whether the mold will grow faster with and without the sun. so the answer would be the bread, the bread doestn change.
I'd say surviving, living, and dying.
Or surviving, showing love for one another, and trying not to be hated due to haters.