What is the origin of greenstone belts? What will be an ideal response?


Greenstone belts developed in back-arc marginal basins that open and then close. When the basin
opens, volcanism and sedimentation take place, and then the basin closes during a period of
compression. During closure, the rocks are intruded by plutons and metamorphosed, and the
greenstone belt is folded into a syncline and also faulted.

Environmental & Atmospheric Sciences

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Organized crime has moved into illegal wildlife smuggling because of the huge profits involved.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

The mineral fluorite is commonly sold in mineral shops as octahedral (8-sided) objects. This shape originates from ________

A) the growth of fluorite in caves and is the form the crystals grow in the open cavern B) cutting a larger crystal along four perfect cleavage planes, forming a cleavage fragment C) the typical crystal form of fluorite D) a pseudomorph (false form) of fluorite from replacement of a salt, potassium chlorite, that grows in octahedral crystals

Environmental & Atmospheric Sciences

Explain how, without any meteorological instruments other than your eyes, you could identify the passage of an occluded front.

What will be an ideal response?

Environmental & Atmospheric Sciences

Protection of banks by planting trees and other vegetation is a form of ________

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences