The correct answer is - Magma generated from a hot spot burned through the overlying plate to create volcanoes.
The Hawaiian Islands are all formed as a result of volcanic activity of a hot spot. The hot spot is stationary, but the islands are in the shape of a chain, not all in the same place. Also, the rocks on the islands that do not have active volcanoes are older, than the ones that do have volcanic activity. This suggests that the Pacific plate is moving. According the direction in which the islands are arranged, the Pacific plate seems to move toward northwest. As it moves, it moves over the hot spot. Since the hot spot is stationary, as the Pacific plate moves, eventually the volcanic activity will stop on the island that has moved further away from the hot spot. The magma from the hot spot will penetrate through the crust that came to be over it. That will result in new volcanic island emerging from the sea over the hot spot. The process goes on for millions of years, and it can result in hundreds of islands of volcanic origin.
HI is most noticeable during the summer and winter. The main cause of the urban heat island effect is from the modification of land surfaces. Waste heat generated by energy usage is a secondary contributor. As a population center grows, it tends to expand its area and increase its average temperature.
Answer:
B. subsistence agriculture
Explanation:
Subsistence agriculture refers to that type of agriculture in which crops were grown in order to feed their own families. These crops were not grown for selling but for themselves in order to survive. At that time there were no markets where all food stuff available. They have plenty of lands where these people grow what they want to eat. They also hunt animals such as rabbit and deer etc in order to eat them.
Vertical. Many rocks in mountainous areas can be vertical or even overturned.
Venus can come closest to the earth in its orbit and look brightest in our skies.
Venus is extremely bright because it is the nearest planet to Earth and because most of the sunlight that reaches it (about 70%) is reflected back into space by its thick clouds. The brightest object in the sky, Venus is frequently seen within a few hours after sunset or before sunrise.
The Earth and Venus is 38 million kilometres away at the closest point of opposition. This is the planet's closest approach to Earth. Venus has never travelled more than 261 million kilometres from Earth. the fact that the distance between Venus and Earth may change by a staggering 223 million kilometres.
To learn more about Venus refer
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