1 Brazil nuts contain high levels of minerals such as selenium, magnesium, copper, manganese, potassium, calcium, iron, phosphorus, and zinc. 2  Magnesium is a key nutrient in a whole host of biological processes. Dark, leafy greens are rich sources of minerals, but spinach in particular contains an abundance of magnesium, calcium, potassium, manganese, and zinc.
There are three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries. This image shows the three main types of plate boundaries: divergent, convergent, and transform. Image courtesy of the U.S. Geological Survey.
There are 3 types of plate boundaries-convergent, divergent, and transform. Convergent boundaries occur when 2 plates collide with each other and push each other. Neither plate will give way, so the crust on the plates rise up and form mountains and mountain ranges. Divergent boundaries form rift valleys, volcanoes, and deep-ocean trenches, and transform boundaries cause earthquakes. Plates slide, collide and shift.