Questions: Choose all that apply. Which TWO are advantages of a model? - study things that are very small or hard to see - save time and money before making a product

The answer is the first one and the third one:

1. Study things that are very small or hard to see: This is correct. Models allow scientists and researchers to study and understand phenomena that are too small, too large, or otherwise difficult to observe directly. For example, models can represent atoms, molecules, or even large-scale systems like weather patterns.

2. Be only an approximation of a phenomenon: This is not an advantage but rather a limitation of models. While models are useful, they are simplifications and cannot capture every detail of the phenomenon they represent.

3. Save time and money before making a product: This is correct. Models can be used to test ideas and designs before creating a physical product, which can save both time and resources. For example, engineers use models to simulate the performance of a new design before building a prototype.

4. Are exactly like the thing they represent: This is incorrect. Models are not exact replicas; they are simplified representations that highlight certain aspects of the phenomenon while ignoring others. This simplification is necessary to make the model useful and manageable.

In summary, the advantages of a model include the ability to study things that are difficult to observe directly and to save time and money in the development process.