To measure concentrations of carbon dioxide over time, scientists use ____.
A) samples from different levels of the atmosphere
B) samples from trees around the world
C) samples from fossils
D) samples from air bubbles in ice core at varying depths
E) samples from plants of various ages

Question

Quizplus · Accepted Answer

To measure concentrations of carbon dioxide over time, scientists use samples from air bubbles in ice cores at varying depths. The carbon dioxide trapped in the bubbles of ice provides a record of atmospheric conditions from hundreds of thousands of years ago. By analyzing multiple ice cores from different locations, scientists can create a timeline of carbon dioxide concentrations and track changes over time.

To Measure Concentrations of Carbon Dioxide Over Time, Scientists Use