Because they change over time
subsoil is newly formed hope this helps
7 days per quarter that’s why we have 7 days in a week... that was totally bs I made it up
This means that the mothers green eyes are recessive alleles and the fathers brown eyes are dominant alleles. The blue eyed puppy is blue eyed because there must have been a gene in the mothers or fathers past generation.
Answer:
When it stands the test of time and is supported by many experiments.
