Answer:
B.) an earthquake
Explanation:
earthquake, volcanoes, tsunamis and landslides are naturally occurring events that can rapidly change earth's surface
The nervous system consists of things like the spinal cord, brain, and all the nerves that connect the sensory organs. Basically, the nervous system helps different parts of the body communicate with each other; thus leading to control of the body.
Answer:
More nitrogen gas became present in the atmosphere
Answer:
there were only anaerobic heterotrophic bacteria (the primordial atmosphere was virtually oxygen-free).
Answer: the sun powers the whole thing
