Which causes seismic waves

a: convection in the mantle

b: movements of the plates

c: gravity in the mantle

d: movements of the core

What forms when chemical reactions combine pollution with sunlight?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide to form water and sodium sulfate. include phases.