The term "unification" refers to the merging of two states into one, but not to the creation of regional political or economic blocs.

Does the threat of global warming require international cooperation? why or why not?

Which of these is least likely to be an adaption? a. a mouse digs a hole to hide from predators. b. a snake bites its prey to deliver it deadly venom. c. a jackrabbit has large ears that it release body heat. d. a parrot learns to say its owner's name.

Which layer surrounds the center of the earth? a: crust b: core c: mantle