Which symbol is associated with structure C?
A. _
B.+
C. X
D.
none

What energy is it when you flip on a switch on a lamp

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.