Which of the following statements is true? A- Chemical digestion includes the physical breakdown of chunks of food.

B- Mechanical digestion begins in the mouth, and includes the tearing and grinding of food with teeth.

C- Mechanical digestion uses teeth to grind food and saliva to moisten the food
making it easier to chew.

D- Chemical digestion includes the chemical breakdown of food and mixing of the food particles with the help of the tongue

Given the data below for the reaction, 2 a + 2 b + 4 c => d + e + 3 f, the reaction is fill in the [ ] order in a, fill in the [ ] order in b, fill in the [ ] order in c and fill in the [ ] order overall. (use the words "first, second, third, fourth" to fill each blank)experimentinitial conc of a, mol/l initial conc of b, mol/l initial conc of c, mol/l initial rate, mol/l. s1 0.1 0.1 0.2 2 x 10-32 0.2 0.3 0.2 6 x 10-33 0.3 0.1 0.2 2 x 10-34 0.4 0.3 0.4 1.2 x 10-2