The degree of vertex D is if it is an indegree or outdegree, it is 1 degree in vertex D.
The Ozone Layer is part of Earth's Stratosphere.
Answer: A Permit is required for one year if under 18 years of age. 16 year olds - No driving from 11 p.m. to 6 a.m., driving for one year unless with 21 year or older licensed driver or driving to and from work.
Explanation: Hope it helps:)