What is the propagation of sun to earth with out reating mediu calledd​

What are canada’s major boundaries?

The oil and gas found in the middle east are regulated by a. organization of petroleum exporting countries b. southwestern asian oil refineries c. north atlantic treaty organization

If a volcano’s magma is high in silica, the volcano will probably a. erupt quietly. b. remain dormant. c. erupt explosively. d. produce dark-colored lava.