<span>A point of intersection of three or more edges is a vertex. A polyhedron with two faces (bases) that are congruent and parallel polygons and whose other faces (lateral faces) are parallelograms formed by segments (lateral edges) connecting the corresponding vertices of the bases.</span>
Answer:
Data from the U.S. geological survey and Censuses are mostly used by demographers as a source to create statistics and records. Explanation: Demographers are federal people who study the trends, distribution, and makeup of the population of a certain country.
Answer:
The population of the city will reach 2 million people in 2025.
Explanation:
The city in question has one million people. The doubling time of the population is estimated at 25 years. Double of one million is two million, and with the population being one million in 2000, 2025 will be the year when the city will have a population of two million since the doubling time is 25 years.
s Doubling of the population in 25 years is not something that happens rarely, but it mostly happens in smaller cities or towns, as the population needed for doubling the preexisting one shouldn't be that large. A city of one million people to double its population in just 25 years is another story. Such a scenario will mean a highly centralized region, with most of the region getting depopulated, while the city in question gets a huge amount of new residents, causing a lot of urbanistic challenges.
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Answer:</h2>
Feldspar can be used to classify the rock based on <u>composition</u>.
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Explanation:</h2>
Felsic rocks are the type igneous rocks which contain feldspar and quartz; and they are typically light in color. A rock which is classified as felsic is contains a high content of felsic minerals such as quartz, orthoclase, muscovite, plagioclase, etc.
The common example of this type of rock is granite. Their chemical composition through the use of Total Alkali Silica determines the name of the felsic rocks. Felsic elements don't have enough magnesium, calcium and iron to form mafic rocks such as pyroxene or olivine.
