Which graph above shows an object’s acceleration? Why did you choose that graph(explain why)

This graph gives information on changes in sea ice extent in the arctic ocean over a 30-year span. the overall trend shows in the ice extent. to address the trend, scientists need to ask themselves, one direct consequence of the trend is that

Which substances have the lowest melting points: ionic covalent, or metallic

What are transitions between a liquid and gas called? identify which way they are transitioning