Which of the following provides a basis for the much-studied temperature record of the past 140 years?

Question

Quizplus · Accepted Answer

The temperature record of the past 140 years has been largely based on measurements of air temperature over land and the oceans. This information is collected and analyzed by meteorological agencies and research institutions around the world. While other sources of data, such as ice cores and tree rings, can provide information about past temperatures, they are limited to specific regions or periods of time and may not be as comprehensive or reliable as the global temperature record based on direct measurements. Fossil shells can also provide information about past temperatures, but they are typically used to reconstruct temperature trends over much longer time scales (e.g. millions of years) rather than the relatively short time period of the past 140 years that is of interest here.

Which of the Following Provides a Basis for the Much-Studied