Answer:
my opinion: Wings (pads)...
hope this helps you somehow
<span>Gills enhance diffusion between aquatic creatures' blood and the surrounding water. They have a large surface area to increase the area available for gas exchange and a lot of capillaries to increase the bloodflow through the gills. The cells in the capillaries are flattened, which further increases their surface area and the rate of gas exchange.</span>
L believe the answer is C. Hope this helps !
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.