<span>Larger stars burn through their Hydrogen reserves faster, fusing Hydrogen into heavier Helium.
Also, to maintain their phenomenal heat, they have to do this to maintain internal pressure and therefore the fusion that powers them, they have to burn quickly to replace the excess heat they radiate away into outer space.
Currently our sun radiates away 4 Million Tonnes of mass every second, that only amounts to a miserly 0.0000001% of its entire mass. Imagine how much mass larger and larger stars lose every second.
The smallest stars, born at the red dwarf level can burn for trillions of years (at closest estimate). Compared with the Supergiant's, the big boys who were born in abundance during the birth of the universe burn out and explode in supernovae after only around 200 Million years. A whisper compared to the life of our Sun which is estimated to run out of fuel after at the ripe of age of 10 billion years.</span><span>
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When a person is hot, the blood vessels in the dermis dilates, in order to maintain the homeostasis. When the temperature is increased, it becomes necessary to lose the body heat. This increased heat is lost by rushing the blood to the vessels present in the dermis layer. These blood vessels dilates so that more blood can flow inside these and the heat can be lost.
hence, the blank can be filled with 'dilate'.
I thought it was because they seem to be smarter. I wanted a movie on it.