The digestive tract needs _____, which provides the bulk against ...

[clippers!]

The digestive tract needs _____, which provides the bulk against which the muscles of the colon can work.
 a. energy
 b. fiber
 c. nutrients
  d. water
 e. fat

Question 2

Vitamin D is activated by chemical transformations in the _____ and _____.
  1.stomach, small intestine
  2.stomach, liver
  3.small intestine, kidneys
  4.kidneys, stomach
  5.liver, kidneys
  6.liver, small intestine

[joshraies]

Answer to Question 1

b

Answer to Question 2

5

[clippers!]

Thanks for the timely response, appreciate it

[pangili4]

Gracias!