1- The terrestrial lithosphere is composed almost of 80% by igneous rocks, they are also known as magmatic rocks and are formed at high temperatures due to magma solidification, they come from the superior mantle and terrestrial coast. Its texture is super resistant with significant hardness to obtain minerals and other derived materials. They can be divided into extrusive and intrusive.
2- Through experiments, Bowen has defined a sequence of mineral formation when a magma begins to cool. There are two types of magmatic differentiation defined by Bowen, the continuous series and the discontinuous series. In the continuous series the internal structure of the magma is not altered and all minerals have iron and magnesium, they are formed: aluminum, silica and sodium and calcium.
In the discontinuous series decreasing the temperature reacts the previously formed mineral with the existing liquid, and thus a new mineral with different internal structure and composition is formed. They are formed: olivine, pyroxena, amphibole and biotite.
Answer:
b conditions in the atmosphere that occur for years at a time in an area
Explanation:
- Climate is defined as permanent conditions that develop over the area due to its geographical properties such as the latitude, nature of terrain and size shape and area covered by the landmass.
- Its distance from the sun and it's positioning on the globe and is differentiated from the weather that is aggregate conditions that prevail over the region for a short period of time like a few days or hours, etc.
- <u>While the climate of a place can be for months, years, and even decades as the polar climate, tropical climate, the Mediterranean climate, the oceanic climate, the continental climate, and the subarctic climate.etc. Hence is a long term meteorological variable.</u>
Answer:The largest ocean in the world - the Pacific Ocean - is ten times bigger than the smallest one - the Arctic Ocean.
Explanation:
Answer:
Explanation:
<u>Renewable resources</u>
Renewable resources are the ones that can be replenished again and again i.e. they can't get exhausted after the use. On to other hand, non renewable energy resources can't be replenished again and again and can become exhausted after the usage .
For example ,
A) fossil fuel:
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Economically </u>fossil fuels are very cheap and hence widely used in economically poor areas.
Fossil fuels has the adverse effects on environment as their burning releases carbon dioxide in the atmosphere, which is the main reason for global warming.
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Benefits:</u> It is very cheap and hence anyone can afford it. Economies of poor countries are very much dependent on the
They are easily accessible and do not need much of technological advancement or heavy machinery.
<u>2. Solar energy:</u>
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Economical cost</u>: Economically it is very expensive and hence it's usage is limited to rich countries only. Silicon used in it is very expensive.
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Environmental: </u>It is environment friendly and so it is a clean source of energy.
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Benefits:
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In this world of drastically changing global climate, increasing pollution and with highly burdened energy resources, solar energy is turns out to be a Savior. It is pollution free and has unlimited abundance .
