Answer:
B
Explanation: You are trying to solve a medical problem by making and sketching a device therefore creating a solution
Answer:
This atomic model has changed over time. Scientists used the model to make predictions. Sometimes the results of their experiments were a surprise and they did not fit with the existing model. Scientists changed the model so that it could explain the new evidence.
<span>Carbohydrates, Lipids, Proteins, and Nucleic Acids.</span>