Final answer:
During Precambrian time, Earth's physical features developed through geological and climatic changes, including the formation of stromatolites and the emergence of life forms with new adaptations. These events and processes shaped Earth's landscapes and contributed to the evolution of the planet.
Step-by-step explanation:
During Precambrian time, Earth's physical features developed through various geological and climatic changes. One significant event during this period was the formation of stromatolites, which were colonial, photosynthetic cyanobacteria. These organisms played a crucial role in shaping Earth's environment by producing oxygen through photosynthesis.
As the climate changed, the perennial snow covering Greenland melted, revealing new geological evidence of the time. The Late Precambrian also saw the emergence of life forms with new adaptations, such as sexual reproduction, specialization of cells, and multicellularity.
The geological events and processes that occurred during Precambrian time were instrumental in shaping Earth's landscapes, carving out mountains, and reshaping the planet's surface over vast periods of time.