GEOGRAPHY HIGH SCHOOL

Which elements are found in a high proportion in Earth’s crust?A.aluminum and iron

B.oxygen and silicon

C.calcium and sodium

D.potassium and magnesium

Answers

Answer 1
Answer: Basically, this is a tricky question. And it has more than one answer. The elements that are found in a high proportion in Earth's crust are  oxygen, aluminium, iron, calcium, potassium, sodium, and magnesium.  But for your Option, I think it is B) Oxygen and Silicon. This is because Oxygen makes 46.6% while Silicon makes 27.7% of the Earth crust. They are like the highest.
Answer 2
Answer: i think its calcium and sodium I'm not sure

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A limestone bed containing fossils that are 550 million years old is ____ a bed of sandstone containing fossils that are 400 million years old.a. younger than
c. older than
b. the same age as
d. not related to

Answers

So we have two limestone beds, one of 550 million years old (well, the fossils are, but it suggests that the rock was created around the same area) and another that is 400 million years old. The first one is then older than the second - the correct answer is c!

Limestone is a sedimentary rock composed primarily of skeletal fragments of marine organisms. The presence of fossils reveals the biological origin of these rocks.

A limestone bed containing fossils that are 550 million years old is older than a bed of sandstone containing fossils that are 400 million years old.

Which of these landforms has the greatest relief? A. a large delta B. a wide valley C. a gentle hillside D. a steep mountain

Answers

A steep mountain is the answer

Answer:

a i just took the test. :)

Aid agencies estimated that approximately four million residents of __________ required food aid in 2009.

Answers

In this question, there are no options given. So we have to answer based on our knowledge. Aid agencies estimated that approximately four million residents of Ethiopia required food aid in 2009. Ethiopia is a country that has long suffered from drought and famine. The people of Ethiopia has long survived on the basis of the food aids they have received. 

Answer:

Ethiopia (A)

Explanation:

That other guys answer was spot on for not having any answers to help him, so all credit and respect should go to him.

What makes Southern Europe so popular with tourists

Answers

BeacuSe most of the ancient greek and rome stuff is there

The following outline is the basic structure for which government type?1. Power is divided between national and regional governments.
2. The people elect the head of government.

3. The people elect members of a lawmaking body.

Answers

First answer.

When power is divided between national and regional governments, it means that government type is federalism or federal system. For example, USA, Canada.

Second answer.

When the people elect the head of government, it means that government type is democracy or democratic system.

Third answer.

When  the people elect members of a lawmaking body, that government type is Representative Government or Representative Democracy.

Answer: The answer is federal democracy.

Explanation:

Which statement about the density of warm water is most likely correct?Warm water is more dense than cold water.

Warm water is less dense than cold water.

The density is the same for warm and cold water.

The density will sometimes be higher for warm water and other times higher for cold water.

Answers

Warm water is less dense than cold water
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