Volcanoes and Volcanic Eruptions. Magmas and Lava. Since volcanic eruptions are caused by magma (a mixture of liquid rock, crystals, and dissolved gas) expelled onto the Earth's surface, we'll first review the characteristics of magma that we covered previously. Three basic types of magma: Mafic or Basaltic-- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na.
EMEA: Europe, the Middle East and Africa, marked on a worldmap. EMEA (or EMEIA if India is included), is a shorthand designation meaning Europe, the Middle East and Africa. It is used by institutions, governments as well as in marketing and business. It is particularly common among North American companies. The region is generally accepted to include all European nations, all African Nations, and extends east to Iran, but including Russia. Typically this does not include independent overseas territories of mainland countries in the region, such as French Guyana.
Submit. The South Asian nation of India is one of the most biodiverse regions on the planet. India has a vast array of different climates, due to its vast size, and as a result offers a large variety of different flowers.There are several different types of flowers that are particularly common in India, such as the lotus, which is the country's official national flower.rinum. The crinum is a perennial plant that is very common in India and other parts of South Asia. Apart from South Asia, the plants exist in the United States, Australia and the Caribbean region.