Mr. stein builds a model of a molecule out of wooden beads and pegs. he uses the model to explain the shape of the molecule. mr. stein uses a model because a. the real molecule doesn't actually have a shape. b. the bonds between the atoms in the real molecule are too strong. c. the model makes it more difficult to understand the molecule's shape. d. the real molecule is too small to easily observe.

The correct option is D) The real molecule is too small to easily observe.

Explanation:

A scientific model is a representation of scientific research or any system or phenomenon which occurs. A scientific model helps us easily understand the events occurring even in those systems which cannot be seen with the eye. Many phenomenons occurring in the nature are visualized through models as the human eye is unable to see them.

For example, the arrangement of atoms in a molecule cannot be seen by the human eye. Hence, models of atoms in a molecule help us easily understand the different bondings present to make up a molecule.

its the cell wall and the they are unique to plant

the answer to your question is b