What is the primary way that metamorphic rocks form?

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

What’s the theoretical yield of solid lead