The Precambrian time refers to the time 4.5 billion to 542 millions year ago. This period is characterized by having reduced atmosphere and included reduced compounds. Scientists believed that atmosphere at that time was devoid of free oxygen and CO2 was present in excess. Before the complex life evolved on the Earth, the Precambrian Earth's ocean contained dissolved carbon dioxide.
D or aka changes in the moons orbit
Hope this helps you
The answer to your Q it is doubled rods of condensed chromatin
Answer:
i think A
Explanation:
since its not in front of the moon and at the side it has to be a crescent moon and the sun is on the right side, so pick A
