The doctor removed the duodenum from the body.
3D models are better than diagrams cause a diagram is flat, and its on a piece of paper, on the other hand 3D models have 3 Dimensions which show the model in a different view, they are also sometimes on paper but you have a better view if the model which helps you get more information of the diagram.
Hope I helped ya!! And plz put it under the right subject next time. This should go under Math.
Easy!!
the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
Photosynthesis takes in carbon dioxide and releases oxygen as a product, so the answer is D.