Radiation. Have a nice day.
In the case of liquid droplets, including water, surface tension is the factor, which is accountable for their shapes and configuration. Though can easily be malformed, the droplets of water seem to be pulled into a spherical shape due to the cohesive forces of the surface layer.
In the non-existence of other forces, involving gravity, the drops of almost all the liquids would be almost spherical.
Answer:
individuals do not evolve, as each individual's genes do not change, and evolution is defined as the change in allele frequencies over time.
Explanation:
