Answer:
I am 90% sure it is A - if I am wrong please let me know so I can fix my mistakes and improve
Explanation:
The answer is; B
Initially, the earth’s atmosphere was mainly filled with carbon dioxide and methane. However, with the evolution of photosynthetic organisms, the composition of the atmosphere changed to be mainly oxygen. This geological time is referred to as the great oxygenation event. The high oxygen levels resulted in oxidation of most the upper lithosphere.
The answer is; B
During this time, the organism on earth began to evolve and live on land. Therefore these geologic events are marked by fossilized of dead primitive organisms such as archaebacteria within the early rocks
Answer:
Air-drying clothes conserves more water than using an electric clothes dryer.
2.5×103 and 3.5 x 102=6.0x103
