Which trem are used to identify pure substances?
a) an element and mixture
b) an element and compound
c) a solution and a mixture
d) a solution and a compound

How do ecosystem respond to nature disasters such as fires and floods

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.

Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance