14. which of the following best explain how the digestive and excretory system work together

a. the excretory system provides oxygen to the digestive system.

b. the excretory system provides nutrients for the digestive system.

c. the excretory system filters the blood in the digestive system.

d. the excretory system eliminates the undisgested food or waste products from the digestive system.


15. how does digestive system work with circulatory system?

a. digestive system provides oxygen to the circulatory system provides nutrients to the digestive system.

b. digestive system provides support to the circulatory system and circulatory system pumps blood to the digestive system.

c. digestive system digests food into simpler form which will be needed by the circulatory system and the circulatory system distributes nutrients to the body parts.

d. digestive system excretes waste product produced by the circulatory system and the circulatory system interprets message coming from the digestive system.