Before there was any life on earth, which gas was absent from the ancient atmosphere?

Which of the layers of the Earth has the following characteristics? i. It is solid and extremely hot. ii. It is the innermost la

Stella [2.4K]

Answer:

b. inner core

Explanation:

To solve this problem let's start by listing the information given. This will help us find which option best fits the characteristics provided to find the correct answer.

characteristics of mystery layer:

i. it is solid and extremely hot

ii. it is the innermost layer of the Earth

iii. it is around 800 miles thick

Now let's go through each option to determine which best matches the characteristics.

option a

outer core

The first characteristic of the mystery layer is 'it is solid and extremely hot.' The outer core of the earth, however, is a fluid layer. Therefore, this option cannot be correct.

option b

inner core

The inner core is a solid 'ball' and is about 10,800°F. It is also the inner, or last layer, of the earth and is around 800 miles thick. Therefore, it matches all characteristics of the mystery layer so, this must be the correct answer. If you would like to be sure, I also reviewed the last two options below.

option c

crust

Because the crust is the outermost layer of the planet, it does not match the second characteristic of the mystery layer. Therefore, this cannot be the correct answer to the question.

option d

mantle

Although the mantle does match the first characteristic, it does not match the second characteristic, which requires the layer to be the innermost layer of the earth. The mantle is one of the outer layers of the earth.

Now that all options are reviewed, we have determined the best solution to the problem. The correct answer to this question is b. inner core.

4 0

4 years ago

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How is the circum-pacific belt represented on the map?

shtirl [24]

The correct answer is - With full, red line.

The circum-pacific belt is represented with a full red line. The line marks all of the belt uninterruptedly, starting from New Zealand, through the islands of Southeast Asia, along the coast of East Asia, bellow the Bering Strait, and along the western coasts of North and South America, ending at Patagonia.

This line, roughly represents the tectonic plate boundaries of the Pacific plate with the other plates with which it is in contact, or rather getting submerged bellow them. Because the plate boundaries are convergent, with the Pacific plate submerging bellow the others, there's intense geologic activity, manifested through earthquakes, volcanic activity, tsunamis.

5 0

3 years ago

What is the smallest country in the world?

dimulka [17.4K]

Its of course vatican city also by area and population

4 0

3 years ago

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describe which countries have the fastest population growth and which have the slowest and why? To describe and explain the caus

Charra [1.4K]

South Sudan has the fastest population growth whereas Bulgaria has the least population growth. The causes and effects of the global warming are described below.

<h3>What is Global warming ?</h3>

Global warming refers to the increase in the temperature of the earth due to the production of the toxic gases such as carbon dioxide and other pollutants.

South Sudan has the fastest population growth whereas Bulgaria has the least population growth. The population increased due to the increase in the number of refugee.

Bulgaria has the least population growth because of the low birth rate.

Global warming is a result of greenhouse gas emissions. The rise in global temperatures is just one of the numerous consequences of global warming.

The 3 types of rainfall are Relief Rainfall,Convectional Rainfall and Frontal Rainfall.

Learn more about Global warming here:

brainly.com/question/12908180

#SPJ1

5 0

2 years ago

The country where the Israelites were made slaves was: Persia Egypt Spain

Brums [2.3K]

The Israelites were made slaves in Egypt.

7 0

3 years ago