Carbon dioxide (CO2) is a colorless, odorless gas that can pose a danger in volcanic areas even when no eruption is imminent. It is heavier than air and can accumulate in low-lying areas, potentially displacing oxygen and posing a risk of asphyxiation to humans and animals. This characteristic makes it a hazard in volcanic regions regardless of eruptive activity.

Solved

Carbon Dioxide ____

Question 32

Multiple Choice

Carbon dioxide ____.

A) is not dangerous due to its strong odor
B) is a danger in a volcanic area even when no eruption is imminent
C) tends to collect in the attic of houses when no eruption is imminent
D) is only a danger during periods of volcanic activity
E) is a particular danger to climbers and hikers since it is emitted at the summit of a volcano

Correct Answer: