From which celestial body is a star born? A. supernova
B. nebula
C. protostar
D. black dwarf

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 substance is a steroid? cholesterol fatty acid monosaccharide trans fat

How many moles are contained in 5.6 l of h2 at stp