Life on Earth probably evolved in the ocean. Which statement supports this view?
A)The cellular makeup of all living organisms depends on saline water within their cells to dissolve and transport chemicals.
B)Biosynthesis cannot occur without high concentrations of free oxygen, similar to the condition of Earth's early atmosphere and ocean.
C)In laboratory experiments, complex life formed spontaneously in a solution similar to that of Earth's early ocean.
D)The oldest fossils yet found are remnants of land-based organisms.

Question

Quizplus · Accepted Answer

The cellular makeup of all living organisms requiring saline water for chemical processes is indicative of life's oceanic origins, as the ocean is a vast saline environment.

Life on Earth Probably Evolved in the Ocean