Answer:
The sun
Explanation:
“Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula. With the rise of the sun, the remaining material began to clump together.“
I think its corn because of the key below ?
The answer is A.) Deflation
The circle with diameter of 24 means that 2
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
r = 24.
Solving for r, we get
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
r=24.
Dividing both sides by
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
, we get r=24/
![\pi](https://tex.z-dn.net/?f=%5Cpi%20)
.
The area of the full circle is
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
times 24 squared over
![\pi ^{2}](https://tex.z-dn.net/?f=%20%20%5Cpi%20%5E%7B2%7D%20)
. The
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
being multiplied cancels out, meaning that 24 squared over
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
is the area of the full circle. 24 squared is 576, and dividing by 16 we get
![\frac{36}{\pi}](https://tex.z-dn.net/?f=%20%5Cfrac%7B36%7D%7B%5Cpi%7D%20)
as the answer.
There are three types of fossil fuels: Oil, coal and gas.
Let's look into their formation one by one:
Oil: Dead plankton such as microorganisms and plants was buried under the sea million years ago, it accumulate over time to become oil, also known as petroleum,
Coal: Plants were dead and broken down by bacteria over time, carbon dioxide and methane were produced. After million years, the dead flora accumulated to become peat and undergone compaction, becoming coal.
Gas: This is formed along oil, and again produced by dead organisms. It is mostly formed during decomposition, and mostly made up of methane.
Hope it helps!