Why does molecular polarity occur?

Polarity is caused when electrons in a covalent bond are not equally shared.

A molecule's polarity is caused when the two nuclei making up the molecule are different sizes.

Polarity is caused when electrons are shared equally in a covalent bond.

Polarity is caused when electrons are taken by one atom in an ionic bond.

your picture is not part of the scientific method.

idk

explanation:

dasdad

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?