Why do glaciologists study ice cores?
to better predict snowstorms

to discover life on other planets

to learn about ancient climates on Earth

to analyze the nucleus of snowflakes

C

Explanation:

when the ice freezes, air bubbles and dust get trapped inside from millions of years ago, by measuring levels of certain elements/gases in the air bubbles, or molecules in the ice you can figure out a little bit about what the past climate was

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Also, you could NEVER guess where i learned this from, if u wanna know, leave a comment :)