Please answer correctly

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

What does it mean for something to be dissolved in watera- it is submerged in water moleculesb-it is stirred in the water moleculesc- it is surrounded by water molecules d-it has water molecules added to it