What, if anything, is missing from the article that would you to evaluate whether the conclusion is justified?

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

What material does not melt at any temperature

What natural processes produce large quantities of co2