How do sodium and chloride ions get into sea water?

Free brainliest! what is a characteistic of the american stradfordshire?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

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.