It’s would be B( the 2nd one).
Answer:
According to the nebular hypothesis, our solar system is formed from a huge rotating cloud made mostly of helium and hydrogen.
Explanation:
The nebular hypothesis was proposed by I. Kant. It explains the formation and evolution of the Solar System. It is considered and accepted widely. The theory states that the Solar System was formed from a nebulous material. And as per nebular hypothesis, stars create the huge, dense clouds of molecular hydrogen. This hypothesis tries its best to describe the formation of the solar system from a nebula cloud that was made of a collection of dust and gas. It is also believed that the sun, planets, moons and asteroids were also born around the same time that is, around 4.5 billion years ago from a nebula.
Ferromagnesian vs. non-ferromagnesian
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1-Contains Magnesium and Iron 1- Contains little or no Magnesium &
as major components Iron
2- Color: very dark 2- Color: Generally lighter
3- Density relatively high 3- Density relatively low
Oceans change the land along the shore, forming tall cliffs and jagged coastlines. "The abrasive nature of seawater causes the rocks to erode over a period of time", the statement explains the type of weathering involved in this process
<u>Explanation:
</u>
The abrasive nature of the sea water of the ocean causes erosion in the rocks which are along the shore. And, this occurs for a period of time causes the formation of the tall cliffs sometimes or to the jagged coastline the other time.
The duration of erosion decides the fate of the cliff or coastline. Erosion of rocks are highly evident in ocean shore line due to the effect of salinity of the sea water. The rocks gets eroded firstly to form jagged coastline which on long exposed erosion forms cliff.
