What Comprises an Arthropod's Exoskeleton

question 13

Multiple Choice

What comprises an arthropod's exoskeleton?

• A) Keratin
• B) Spicules
• C) Chitin
• D) Bone

---

Definitions:

Proportional Tax

A tax system where the tax rate remains constant regardless of the amount subject to taxation.

Regressive Tax

A tax system wherein the tax rate decreases as the taxable amount increases, placing a higher burden on lower-income earners.

Sales Tax

A tax on the value of goods sold.

Wealth Tax

A tax on the wealth of an individual.