Precambrian Time 4.6 billion-544 million years ago
![Picture](/uploads/2/5/8/7/25870198/350404901.jpg)
Oceans were created.
- The Precambrian Time is when the Earth formed from gravity pulling dust, rock, and ice creating a solar nebula
- Oceans were formed from the Earth surface cooling down enough for the rain to stay on the ground. The water eroded some of the rocks to create the oceans we have today.
- The oldest rock in the world formed when molten lava rose and cooled from the cracks in the sea floor
- Simple cells or prokaryotic cells are simple because they are missing a nucleus(brain). One simple cell is bacteria.
- A complex cells or eukaryotic cells are complex because they are made up of more than one cell, they have a nucleus and an example is algae.
- The jellyfish-like animal is an organism that has more than one cell and is one of the first multicellular creatures.
- Arthropods are animals with a segmented body, many jointed limbs, and an exoskeleton. They are invertebrates. They are animals like spiders, crabs, insects and so much more.
- The first mass extinction ever recorded in history ended the Precambrian Time an wiped out 80-90% of the species that lived then.
![Picture](/uploads/2/5/8/7/25870198/374884014.jpg)
jellyfish-like organism