Yeast is a living It is used as a
which is a gas
agent used to make dough rise. As it eats sugar it releases
given off as a by product; this process is called proofing. When yeast is dissolved the
If
temperature of water is very important. If it's too cold, the yeast will not
the yeast. In order for yeast to grow, we must
the water temperature is too hot, it will
meet three conditions for growth.

It makes pastries rise

Explanation

"As more and more tiny air cells fill with carbon dioxide, the dough rises and we're on the way to leavened bread. Yeast cells thrive on simple sugars. As the sugars are metabolized, carbon dioxide and alcohol are released into the bread dough, making it rise."

And how is this a question?

answer: the answer is d.

explanation: this is because when you exercise you make your muscle produce a certain liquid, that does not evaporate it.   also when you exercise you do not reduce muscle fiber.   and it does not really control your twitch that much.