-Examine the Digestive System Structures in the Accompanying Figure

question 75

Multiple Choice

-Examine the digestive system structures in the accompanying figure. The highest rate of nutrient absorption occurs at location ________.

• A) 1
• B) 2
• C) 4
• D) 5
• E) 8

---

Definitions:

Pyramids of Numbers

A graphical representation showing the number of organisms at each trophic level in an ecosystem.

Biomass

The total mass of organisms within a given area or ecosystem at a given time, often used as an energy resource.

Gross Primary Productivity

The total amount of solar energy that photosynthetic organisms capture and convert to organic compounds in a given area over a certain period.

Nitrogen Cycle

The worldwide circulation of nitrogen from the abiotic environment into living things and back into the abiotic environment.