6. Why does the sun seem to change position in the sky? A. Earth's rotation
B. Earth's orbit
C. the sun's rotation
D. the sun's orbit

One or more substances changing into one or more substances is an example of a

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?