Well the boiling point of an element is usually higher than that of it's melting point counterpart for one. The similarity begins when you go from right to left on the period of elements. There's an decrease and then an increase. So reactivity effects the physical traits of the element, being your similarity between the boiling and melting points :D
Answer:
C Front teeth of a beaver and tusks of an elephant
It is famed for the death of the dinosaurs. However, many other organisms perished at the end of the Cretaceous including the ammonites, many flowering plants and the last of the pterosaurs. Some groups had been in decline for several million years before the final event that destroyed them all. It's suggested that the decline was due to flood basalt eruptions affecting the world's climate, combined with drastic falls in sea level.
The answer is B since the energy that the body uses or the energy we have is measured in calories.
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Lipids are water insoluble biomolecules that in the form of phospholipids, play an important part of the cell membrane structure and function.