The precambrian time started way back when. To be exact it started 4.6 billion years ago. It was the longest period of time. The Precambrian time period ended 544 million years after it started. Precambrian Time had a small variety of climates of weather. This is was the climate in the Precambrian Time. Ice house switches of with greenhouse time to time. A icehouse is large sheets that cover the poles. A greenhouse is very little permanent ice. During the time period there were some landform changes. These are some examples. The continents were close to the equator so it would cause the continents to be very hot. In the time the continental drift had not happened yet so everything was very close. The location in the Precambrian time was Panafrican/panthalassa ocean. Also the way they looked were mostly down south. That was the place where the climates, landforms and continents all started to evolve.
The Precambrian time had to be the start of life and extinction here are some facts about animals and plants. At the time not any big or even small animals existed, but little little ones did like bacteria started to transfer to a tiny creature. The time period also started to have multi celled animals evolved.In this time period there was some changes in plans to. The period started to transfer from the ocean to land. Now we are getting to the end of the Precambrian time and some more animals have started to evolve. These are the living things, flat squirmy creatures, and some more sea creatures. At the end of the time period there was an extinction, but it was not as big as the mass extinction. That is the life and extinction of the Precambrian.