Glaciologists, geochemists, and climatologists study ice layers to learn about past climates. Distinct ice layers are caused by . When studying ice layers, scientists use to measure isotopes of certain gases. These gases reveal the at the time when the ice layers were formed.

A long-term routine of weather in a region is called climate. Ice layers are studied to learn about climate. The different ice layers are formed by seasonal changes.

Who are Glaciologists and climatologists?

Climatologists, geochemists, and glaciologists study the climate, geological happenings, and glaciers to reveal the past information.

The variable seasonal condition causes the formation of the distinct ice layers that are studied by an instrument called a spectrometer. The device estimates the isotopes of the gases present in the different ice layers.

The isotopic forms of the gases reveal the temperature of the time it was formed and indicate the details of the climatic and weather conditions of that time.

Therefore, the correct blanks are 1. seasonal change, 2. spectrometer, and 3. temperature.

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