1.          Food in different states can be found along the alimentary canal.

Stomach: semi solid;

Small intestine: thick liquid becomes thinner further down;

Large intestine: semi-solid becomes harder nearer the end of…

2.          Small pieces in stomach, smaller and smaller down along the intestine…

3.          Food is broken down into smaller pieces by mechanical digestion, down long the alimentary/digested chemically into smaller and smaller particles…turn into semi-solid from thick liquid…water is being absorbed in…becomes semi-solid again near the end of…