Question

8. Which body system absorbs oxygen? ____________________________________________

9. Which body system distributes oxygen? __________________________________________
10. Which body system absorbs nutrients? ___________________________________________
11. Which body system distributes nutrients? ________________________________________
12. What organism aids your body with digestion? ____________________________________

Answer 1

8. respiratory system

9.circulatory system

10.digestive system

11. circulatory system

12. e.coli, pro-biotic bacteria/enzymes

Explanation of 12:

Lactic acid bacteria and Bifidobacteria are two important types of gut bacteria, which are autochthonous ones from birth or acquired from digested food. Lactobacillus and Leuconostoc spp. are the main lactic acid bacteria found in the human intestine.