1.a. There is a variety of evidence for the theories of continental drift and plate tectonics., 1.b. There are distinctive features and processes at plate boundaries., 2.a. There is a variety of volcanic activity and resultant landforms and landscapes....
What law governs the transaction? Is there a deal?, If there is a deal, is it enforceable by the courts? i.e. Is it a contract?, If there is an enforceable deal, what are its terms?...