A large, diffuse, slowly rotating cloud of "dust and gas" began to contract due to gravitational forces. Because of the need to conserve angular momentum, as the cloud got smaller, it rot
. The widely accepted modern variant of the nebular hypothesis is Solar Nebular Disk Model (SNDM) or simply
All of the continents fit together like a puzzle.
The endosymbiotic hypothesis postulates that an early eukaryotic cells lacking mitochondria