Can anyone help me please with this please

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle

Express the following number in scientific notation. 0.026890 =

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.