Why were only p waves recorded at a seismic station and not a waves

What noticeable trend from this graph might be used to make a conclusion?

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

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.