What role does the esophagus play in the digestion of food? Text to speech
A:A. The esophagus breaks up pieces of food through chemical reactions.
B:B. The esophagus pushes food into the throat.
C:C. The esophagus has muscles that push food into the stomach.
D:D. The esophagus produces digestive juices to break down food.

B. a graduated substance

Answer:   d.  carbon dioxide.

The answer to the question: choose the correct statement.  a) when ethane reacts with fluorine gas the product is less stable.b) addition reactions of unsaturated hydrocarbons and halogens requires a high activation energy.  c)the double covalent bond within unsaturated hydrocarbons requires a lot of energy to break.  d)the double covalent bond within unsaturated hydrocarbons can be broken easily.is: a) when ethane reacts with fluorine gas the product is less stable.

The answer is fossil fuels.