Answer: c. Oxygen, silicon, and aluminium
Explanation:
The common elements in the Earth's crust in order of decreasing abundance are as follows:
Oxygen: Oxygen is the most abundant element on earth's crust. It makes up 46.6%. It exists as compound of the silicate minerals. It is used for industrial, commercial and medical purposes.
Silicon: Silicon is the second most common and abundant element on the earth crust. It makes up the concentration of 27.7%. It combines with the minerals of silica to form the silicate minerals. It is used for the purpose of ceramics, cosmetics, glass and other products.
Aluminium: Aluminium is the third most common and abundant element on the earth crust. It makes up the concentration of 8.1%. The aluminum exists in the form of aluminium oxide, potassium aluminium sulfate and aluminium hydroxide. It is used for the purpose of manufacture of rockets, machinery and automobiles.
The nebular theory is the justification for the creation of solar systems. What the theory explains are three facts – first fact is that all the terrestrial planets, which are those within the orbit of the Asteroid Belt, are rocky, while those outside it are gaseous. Second fact is that they all orbit within 6 degrees of a common plane. And lastly, is that the planets all rotate in the same direction. The last fact is the reason why the nebular theory is supported. Therefore, the correct answer is all the planets orbit the sun in the same direction. (and roughly on the same plane.)
... is approximately 109 <span>times larger ...</span>
1,020.165 is this a answer?
Answer:
C
Explanation:
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