-Ice cores and tree rings are two ways that scientists study the history of Earth’s climate. -Compare the two by writing each of the characteristics listed in the chart into the correct location on the Venn diagram below.

-Contains air bubbles

-Shows precipitation changes

-Shows changes in temperature

-Can measure climate from over a million years ago

-Contains pollen

-Contains volcanic ash

-Shows atmospheric composition

-Shows presence of groundwater

-Can measure climate for up to a few thousand years