Which indicator would tell scientists the most about future climate change?(1 point)

record-breaking droughts

new regulations to decrease the release of nitrous oxides

the discovery of new natural gas fields

the data obtained from ice cores

The data obtained from ice cores could scientists tell the most about future climate change.

Explanation:

The climate has been changing and our polar ice caps have been recording it each year. The scientists can calculate how modern amounts of carbon dioxide and methane compare to those of the past, and, essentially, compare past concentrations of greenhouse gasses to temperature.

In order to have a endothermic reaction, heat can be added to the  products to help it overcome the energy barrier. The energy is then used in order to fuel the reaction. In an exothermic reaction, energy is dispelled, usually in the form of heat.