Four of the five answers represent likely mechanisms contributing to how life's first building blocks formed. Select the exception.
A)lightning-fueled atmospheric reactions
B)delivery from ancient volcanoes
C)reactions at hydrothermal vents
D)delivery from outer space
E)spontaneous combustion

Question

Quizplus · Accepted Answer

Spontaneous combustion is not a likely mechanism for the formation of life's first building blocks. The other options, such as lightning-fueled atmospheric reactions, delivery from ancient volcanoes, reactions at hydrothermal vents, and delivery from outer space, have all been proposed and studied as potential mechanisms.

Four of the Five Answers Represent Likely Mechanisms Contributing to How