If I infected myself with a ravenous mutation virus how long do I have left

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.

Air can be considered a mixture. which statement does not explain why?