A single compound breaks apart to form two or more elements or compounds

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.

Which of the following describes a situation where competition between producers exists

Consider the story you just read. all but one of the choices below indicate that something is living.