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4 years ago

How do impact craters reveal a surface’s geological age??

1 answer:

7 0

Scientists record the size and number of impact craters and how eroded they are to determine the ages and histories of different planetary surfaces.Older surfaces have been exposed to impacting bodies (meteoroids, asteroids, and comets) for a longer period of time than younger surfaces. Therefore, older surfaces have more impact craters.

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Help me with number 2 and 3 explain yourself please

kkurt [141]

For number 2 I would say C because take a square for example which is a quadrilateral has all 90 degree interior angles so does a rectangle. As for number 3 I would say maybe A or B I’m a bit confused to as what the question is asking. Hope this helped a bit though and good luck!

6 0

3 years ago

The united states purchased alaska from russia because a of the large number of oil fields b of the aleutian island c of the gol

Lilit [14]

D i am pretty sure that is the best answer plus alaska was into fur

6 0

3 years ago

Which ones right I’ll give brainliest

Dmitrij [34]

Answer:

Well most transform boundaries are found on the sea floor, so I will have to say the second one.

Explanation:

5 0

3 years ago

Read 2 more answers

1. Explain the treaty of vienna of 1815? 2. Who was giuseppe mazzini

hoa [83]

Answer:

1, In 1815 the European powers namely the Britain, Russia, Prussia and Austria had defeated nepolean and met at vienna to draw up a settlement for Europe.they drew up the treaty of vienna for the objective of undoing most of the changes brought by Nepolean.

2, Giuseppe Mazzini was a Italian revolutionary who forged to unify Italy into a nation state.

4 0

3 years ago

Which sector of the economy activity rapidly in both developed and developing countries?

devlian [24]

Explanation:

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Wikipedia

Three-sector model

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This article includes a list of general references, but it remains largely unverified because it lacks sufficient corresponding inline citations. (August 2008)

The three-sector model in economics divides economies into three sectors of activity: extraction of raw materials (primary), manufacturing (secondary), and service industries which exist to facilitate the transport, distribution and sale of goods produced in the secondary sector (tertiary).[1] The model was developed by Allan Fisher,[2][3][4] Colin Clark,[5] and Jean Fourastié[6] in the first half of the 20th century, and is a representation of an industrial economy. It has been criticised as inappropriate as a representation of the economy in the 21st century.[7]

Industrial output in 2005

Service output in 2005

According to the three-sector model, the main focus of an economy's activity shifts from the primary, through the secondary and finally to the tertiary sector. Countries with a low per capita income are in an early state of development; the main part of their national income is achieved through production in the primary sector. Countries in a more advanced state of development, with a medium national income, generate their income mostly in the secondary sector. In highly developed countries with a high income, the tertiary sector dominates the total output of the economy.

The rise of the post-industrial economy in which an increasing proportion of economic activity is not directly related to physical goods has led some economists to expand the model by adding a fourth quaternary or fifth quinary sectors, while others have ceased to use the model.

Structural transformation according to Fourastié

Extensions to the three-sector model

Value added, national accounts and the three sector model