What does the esophagus connect? the intestine to the colon
the intestine to the mouth
The stomach to the intestine
the mouth to the stomach

it think it would be last one.  the mouth to the stomach is the answer.

Explanation:

The correct answer is D! The esophagus connects the mouth to the stomach.

Explanation:

The mouth is connected to the esophagus, which in turn is connected to the throat. The throat, in turn, connects the mouth to the stomach.

I had this on a science test and I got it right :D

I hope this helps! ;)

Option (c) is the correct answer.

Explanation:

According to Bronsted Lowry, acids are the species that donate a hydrogen ion whereas bases are the species which accept a proton.

For example,

Here and is one of the conjugate acid-base pair.

Thus, we can conclude that a hydrogen ion is transferred between a conjugate acid-base pair.