it is caused when the variation is hit on the guitar
the enviroment.
it is called vibrato
The ozone layer
There is variation among humans because of sexual reproduction, crossing over, assortment, and mutations.
Variation within species can be caused by genetic mutations, environmental factors, and interactions between genes and the environment. Genetic mutations are changes in the DNA sequence that can create new traits. Environmental factors, such as diet and climate, can also influence variation by selecting for certain traits over others.
A schedule variation is the difference between the time an activity is scheduled to be completed and the actual time it is completed. Any deviation in the scheduled time causes a variation.
It has adaptations
genetic variation
Sexual reproduction causes most variation in organisms. This is because genes get mixed up in the process whereas in asexual reproduction the offspring is genetically identical to the parent.
revolution of earth around the sun causes the variation in the temperature..
It detects the presence of special causes of variation.
depends on how big the lungs are