Which Conclusion Was Considered "Very Likely" in the 2007 Report

question 38

Multiple Choice

Which conclusion was considered "very likely" in the 2007 report of the Intergovernmental Panel on Climate Change?

• A)Human-caused emissions are the main factor causing warming since 1950.
• B)The observed warming of the past 100 years is due solely to climate variability.
• C)The Arctic Sea ice thickness decreased approximately 40% during late summer/early fall.
• D)Summer droughts have increaseD.

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Definitions:

Lithosphere

The rigid outer part of the Earth, encompassing the crust and the upper part of the mantle, involved in plate tectonics and continental drift.

Shield Volcanoes

Broad, gently sloping volcanoes formed by the accumulation of highly fluid lava flows, resembling a warrior's shield.

Basaltic Magma

A type of magma that is low in silica and high in iron and magnesium, characteristic of mid-ocean ridges and volcanic islands.

Low Slopes

Areas of land where the gradient or incline is slight, typically leading to the gentle flow of rivers or surface runoff.