Answer:
The great varieties of minerals on the Earth are classified by mineralogists into a small number of groups on the basis of : The negative ion or ionic group in their chemical composition.
Explanation:
Minerals are classified based on their chemical properties. The anion, a negatively charged ion that generally comes at the end of a mineral's chemical formula, is the fundamental foundation for classifying minerals, with the exception of the native element class. Cations are ions with a net positive charge because they have fewer electrons than protons. Anions, on the other hand, have a net negative charge because they contain more electrons than protons.
Hope this helps! :D
The United States is a vast country and it has all sorts of relief forms, but it can generally be divided into few relief regions that have similar characteristics.
Explanation:
The United States is an enormous country, occupying territory in North America that stretches from the Pacific Ocean in the west, to the Atlantic Ocean on the east, and from the Great Lakes in the north, to the Gulf of Mexico in the south, plus having some territories that are not attached. In this vast territory, there are all sorts of minor and major relief forms, which makes this country very interesting for the geographers.
Some areas are very low, some very high, there are numerous mountains ranges, lowlands, and plateaus. There are several orogenic processes that took place and formed big portion of the relief forms. What is interesting for relief in the United States is that it can be divided from east to west, in a meridian manner, as all the major relief patterns tend to have a roughly north to south direction.
The country can be divided though into several areas in accordance to the relief patters:
- Strip of coastal plains along the Atlantic coast
- Appalachian Mountain Range
- Plains
- Rocky Mountains
- Plateaus
- Cascades
- Strip of coastal plains along the Pacific coast
Learn more about the Appalachian Mountain Range brainly.com/question/1746571
#learnwithBrainly
D. The world should not stand by and allow injustices to occur
Hope this helps chu
Have a great day
☆ Dont forget to mark brainliest ☆
