Mutation is a change in DNA, the hereditary material of life. An organism's DNA affects how it looks, how it behaves, and its physiology  all aspects of its life. So a change in an organism's DNA can cause changes in all aspects of its life.
continuously variable transmission (CVT)=An automatic transmission that can change seamlessly through an infinite number of effective gear ratios between maximum and minimum values. Automatic transmission= Automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually.
A cerebrovascular accident (CVA), an ischemic stroke or âbrain attack,â is a sudden loss of brain function resulting from a disruption of the blood supply to a part of the brain. Cerebrovascular accident or stroke is the primary cerebrovascular disorder in the United States.