An earthquake is the shaking of the ground cause by seismic waves. Almost all earthquakes occur when pent up stress in rocks along large, active faults (like the SAF) is suddenly released as the rock breaks.n earthquake is the shaking of the ground cause by seismic waves. Almost all earthquakes occur when pent up stress in rocks along large, active faults (like the SAF) is suddenly released as the rock breaks.
Signs and Symptoms. According to the Autism Society, autism symptoms typically become clearly evident during early childhood, between 24 months and 6 years of age. Symptoms include a marked delay in language and cognitive development. There may be signs of obsessive and/or antisocial behavior.
Many Different Autisms; One Autism Spectrum. Autism. Autism is a spectrum disorder, meaning that people with autism may have a wide range of mild, moderate, or severe symptoms. From 1994 to May 2013, the autism spectrum was represented by five autism spectrum diagnoses in the fourth version of the official Diagnostic Manual.