Answer:
the concept that best represents the situation described here is: Thermal runaway or positive feedback. Higher atmospheric temperatures cause glaciers
Explanation:
Scientists can't be sure about the early atmosphere and can only draw evidence from other sources. For example, volcanoes release high quantities of carbon dioxide. Iron-based compounds are present in very old rocks that could only have formed if there was little or no oxygen at the time.
false because physical geography is the branch of geography dealing with natural features and processes.
