Primacy

question 104

Multiple Choice

Primacy

• A) occurs only in core countries.
• B) occurs only in peripheral countries.
• C) occurs in both core and peripheral countries.
• D) occurs only in semiperipheral countries.
• E) has not occurred since World War II.

---

Definitions:

Nitrogenous Wastes

are byproducts of protein and nucleic acid metabolism that organisms must excrete, including urea, ammonia, and uric acid.

Malpighian Tubules

Excretory tubes uniquely found in the digestive system of insects and arachnids, serving to remove waste products from the blood.

Major Nitrogenous Waste

The primary form of nitrogen excreted by organisms, which varies among species (urea in mammals, uric acid in birds and reptiles, and ammonia in aquatic organisms).

Annelids

A phylum of segmented worms that includes earthworms and leeches, characterized by their segmented bodies and presence in diverse habitats.