Before your food passes from the mouth and down your esophagus, salivary amylase, an enzyme in saliva, begins to digest the starch in your bread. That is the start of chemical digestion. ... The passage of the bolus through the esophagus to the stomach occurs by peristalsis, a series of wave-like muscle contractions.
Answer:
To back away
Explanation:
To back away because magnets are different and is they are put the wrong the way it moves back
I think its Uracil replaces thymine on rna
Hope this helps
Explanation:
seals more offspring when food is plentiful