please help.. Which of the following events is most likely to cause an environmental disturbance in a grassland biome? A. Earthquake B. volcanic eruption C. hurricane D. fire caused by lightning

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 is most likely true about water in chemical solutions?

Why is the melting of ice a physical change ?