Enzymes are proteins produced by the body to do a particular job. The pancreas produces amylase to break down the carbohydrates in food into simple sugars. The pancreas makes lipase to digest fats into fatty acids. Sugars and fatty acids can then be absorbed by the small intestine.
It is a gas. Answer: Helium can be in any state (solid,liquid or gas) depending on its pressure and temperature. At 2.5 MPa:
Remember that making the nitrogen in the air cold enough makes it turn into a liquid, eventually the cold air becomes liquid nitrogen too, and you can see this liquid in the bottom of the balloon (take the balloon out of the nitrogen and show liquid in balloon.