The digestive system is critical to maintaining a healthy body because

a.
the digestive system make food taste better.

b.
the digestive system is the primary way the body obtains oxygen.

c.
the digestive system collects the nutrients needed by the body.

d.
the body expels all of its waste using the digestive system.

Glucose is one of the primary molecules which serve as energy sources for plants and animals. It is found in the sap of plants, and is found in the human bloodstream where it is referred to as "blood sugar".

Humans, animals and plants depend on the cycle of cellular respiration and photosynthesis for survival.

Hope this helps

BRAINLIEST PLZ

Explanation: