Simplify the Expression. ​

question 32

Multiple Choice

Simplify the expression. ​
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Definitions:

Atmosphere

The layer of gases surrounding a planet, held in place by gravity, essential for maintaining life by providing breathable air and protecting from harmful solar radiation.

Prebiotic Soup Hypothesis

A theory suggesting that life on earth began in a "soup" of organic molecules, possibly in the oceans, that eventually led to the formation of more complex molecules and early life forms.

Organic Molecules

Molecules that contain carbon and are found in living systems.

Fossil Stromatolites

Ancient, layered bio-chemical structures created by the trapping, binding, and calcification of sedimentary grains by microbial mats of microorganisms, especially cyanobacteria, indicative of early life on Earth.