25
QuizMultiple Choice

Catalysts — Unit test

Question 25 • PA Human Anatomy & Physiology A 2026-2027 SMITH IC

What is the primary function of the carbon cycle?

Answer
A
recycling the supply of carbon on Earth
B
creating macromolecules
C
recycling the supply of water on Earth
D
creating fossil fuels

Explanation

The carbon cycle moves carbon among the atmosphere, living things, oceans, and Earth’s surface. Its primary function is to recycle Earth’s supply of carbon, rather than to create macromolecules or fossil fuels. Water is recycled through the water cycle.

AI-written and checked against the verified answer.

Previous
Next