Contour: Gives the bird its stream line shape.
<span>Down feathers: Keeps the bird warm.</span>
I believe the answer is gene splicing
Photosynthesis results in increased biomass for a plant. I<span>n photosynthesis, carbon dioxide and water
yield glucose and oxygen. So, the carbon dioxide and water are taken in and are create a glucose. Glucose can be transformed into organic molecules, such as starch, which will increase biomass.</span>