What causes the rock cycle?

What causes the rock cycle? When Earth’s tectonic plates move around, they produce heat. When they collide, they build mountains and metamorphose (met-ah-MORE-foes) the rock. The rock cycle continues. Mountains made of metamorphic rocks can be broken up and washed away by streams. What causes the rock cycle and the continuous alteration of Earth? The […]

Who is father of vital statistics?

Who is father of vital statistics? Indeed, William Farr (1807–1883), a founding father of vital statistics, was also an innovator in the emergence of epidemiology as a rigorous scientific method of studying disease distribution. Who is responsible for registering births deaths and other demographic events in the United States? The U.S. vital statistics system is […]

Cual es la diferencia entre ciencia pura y aplicada?

¿Cuál es la diferencia entre ciencia pura y aplicada? Se suele distinguir entre ciencias puras (o básicas) y ciencias aplicadas en tanto diferentes rumbos posibles de la investigación científica: las llamadas puras persiguen la comprensión cabal del universo que nos rodea sin ninguna utilidad inmediata para el entorno humano, mientras que las aplicadas persiguen la […]

What is ADHD classified as in the DSM-5?

What is ADHD classified as in the DSM-5? The DSM-5TM includes ADHD among neurodevelopmental disorders, which comprise conditions associated with factors affecting brain development, and gives examples of how ADHD symptoms are expressed across the lifespan. Which DSM-5 criteria was revised for the diagnosis of Attention Deficit Hyperactivity Disorder? When the Diagnostic and Statistical Manual […]

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