digestive system

Question 1

the use of chemicals like acids and enzymes to break food down into smaller molecules

Answer 1

Chemical digestion

Question 2

the use of physical methods like chewing to break food down into smaller pieces

Answer 2

Mechanical digestion

Question 3

are necessary for most chemical reactions in our bodies

Answer 3

enzymes

Question 4

of or relating to nourishment or nutrition

Answer 4

alimentary