Answer:Examples of valuable nonmetallic minerals extracted by mining are sand, gravel, phosphate
Explanation:
Nonmetallic minerals refers to those chemical elements that cannot be used to make any other products after they have been melted. Examples of these minerals are clay, limestone,marble , sand and gravel. They are called non metallic because they can not conduct electricity , can not conduct thermal power, they lack luster,rigor and malleability.
The non metallic metals are mostly used to make cements , lime and glass.
They can also be used in sanitary ,tableware and decorative products.
Several steps are followed in making certain products from these minerals such as grinding,cutting,mixing,shaping and heating.
The discoveries of Donald Johanson are vital to our understanding of
human origins and the development of humans throughout our history. The
skeletons found by Johanson greatly altered the initial perceptions and
set the entire industry on a new route.
Answer:
The United States Bill of Rights comprises the first ten amendments to the United States Constitution.
Explanation:
Answer:
Occam's Razor
Explanation:
According to my research on different scientific theories, I can say that based on the information provided within the question this key characteristic is explained as the critical thinking principle of Occam's Razor. This theory states that between two explanations for a certain occurrence, the simpler explanation is usually correct.
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I believe the answer is: Exhaustion stage
In the exhaustion stage, a person's body or mental condition has reach a point of breakdown in response to the stressor/source of problem that they face in their life. Due to constant adrenaline that surge in their body, it is very common to see people in exhaustion stage to be constantly tired/fatigue all day long.
