Which phrase best describes a savanna biome? a. is home to scattered, drought-tolerant trees b. receives less than 25 cm of precipitation per year c. has warm summers with rain and cold winters d. contains mostly needle-leaved evergreen trees

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.