Which level of organization describes a camel?

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

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 are correct values for the ideal gas laws constant r