The Farallon plate was forced under north America by slow geological movement, this process is called subduction.
Genetic variation happens when one organism in the population mates with a genetically different organism. Same species, different genetics such as color or height/weight.
Assuming this is an EMT Question
Never disclose any information over the radio that can be used to identify the patient including his name. Use general terminology.
Answer:
The particularly severe winter of 1777-1778 proved to be a great trial for the American army, and of the 11,000 soldiers stationed at Valley Forge, hundreds died from disease. However, the suffering troops were held together by loyalty to the Patriot cause and to General Washington, who stayed with his men.
Explanation: