List possible limitations to scientific models.

Size makes models not completely accurate. The air resistance difference can be factored in but it's not always going to be accurate. Most models have to be small to conserve resources.  Scientific models are only as good as the data that goes into them. When the data is incomplete or inaccurate, the model doesn't give a true picture. Sometimes we miss an important part of the picture. We just don't understand all the factors that affect the situation, so there are factors that aren't even programmed into the model.

What kind of scientific models?

The gens present in the dna in the nucleus of the cell in the body