For four spin-half spins, one can construct two orthogonal singlet states. Construct them by first combining spins 1 and 2 into singlets and triplets. Then combine spins 3 and 4 into singlets and triplets.

Give examples of selective advantage of organism’s body part/organ

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]