Scientific evidence suggests that Earth had cooled enough for_____ to accumulate by 4.3 billion years ago.
A) carbon monoxide
B) carbon dioxide
C) oxygen
D) water
E) nuclei

Question

​Scientific evidence suggests that Earth had cooled enough for_____ to accumulate by 4.3 billion years ago.
A) ​carbon monoxide
B) ​carbon dioxide
C) ​oxygen
D) ​water
E) ​nuclei

Quizplus · Accepted Answer

Scientific evidence indicates that Earth had cooled sufficiently by around 4.3 billion years ago for water to start accumulating. This is a key point in Earth's early history, marking a transition towards conditions that could eventually support life.

​Scientific Evidence Suggests That Earth Had Cooled Enough For_____ to Accumulate

Scientific Evidence Suggests That Earth Had Cooled Enough For_____ to Accumulate