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rewona [7]
3 years ago
13

The sun is made up of different elements. Which element makes up more

Geography
1 answer:
Lilit [14]3 years ago
4 0
D. Hydrogen

Two elements make up the overwhelming majority of the sun's matter, by mass: hydrogen (about 70 percent) and helium (about 28 percent).

Your welcome
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Both Jews and Christians believe their religion emerged from
Kobotan [32]
I think either Islam or Arab.
It's Muhammad. 
5 0
3 years ago
Read 2 more answers
USING FOUR OR MORE COMPLETE SENTENCES, IDENTIFY THREE TYPES OF CULTURES IN THE WORLD AND DESCRIBE ONE CHARACTERISTIC OF EACH. oo
AnnZ [28]

Answer:

Explanation:

The question you have asked is a very very wide one, with a lot of different opinions. But if I were to answer, I would say types of culture include;

Clan Culture.

Hierarchy Culture.

Market Culture.

Clan Culture: is a family-like or tribe-like type of environment. A clan culture places a lot of emphasis on consensus and commonality of goals without ignoring that of values. I would also add that Clan cultures are very collaborative and their characteristics include;

Effective communication.

Diversity.

Learning opportunities.

Recognition.

Clear and defined purpose.

Meaning and purpose.

Teamwork.

4 0
3 years ago
Analysis of a rock sample that it contains 6.25% of its original uranium-235. How old is the rock? How do you know?
Andrews [41]

Answer:

The age of the rock = 2800.6 million years = 2.8 billion years.

A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.

Explanation:

Half life of Uranium-235 = 700 million years (from literature)

The decay of radioactive substances follow first order reaction kinetics.

The general equation is given as

A(t) = A₀ e⁻ᵏᵗ

A(t) = Amount of radioactive substance left after a particular time = 6.25%

A₀ = initial amount of radioactive substance = 100%

t = time that has passed since the beginning = age of the rock = ?

k = decay constant

The decay constant is related to the half life (T) through the relation,

k = (In 2)/T

k = (0.693/700) = 0.00099 /million years

A(t) = A₀ e⁻ᵏᵗ

6.25 = 100 e⁻ᵏᵗ

0.0625 = e⁻ᵏᵗ

In e⁻ᵏᵗ = In 0.0625 = -2.7726

-kt = - 2.7726

t = (2.7726/0.00099) = 2800.6 million years

t = 2.8 billion years.

Hope this Helps!!!

7 0
3 years ago
What is a country that is controlled or strongly influenced by another, more powerful country?
Lena [83]
D) Territory
For example Puerto Rico is its own country but is territory of the United States.
3 0
3 years ago
Read 2 more answers
3
s344n2d4d5 [400]

Answer:

There is a higher concentration of people who live in the northern hemisphere than the southern hemisphere.

Explanation:

A is not correct because the equatorial region is not densely populated, but it is actually sparsely populated.

B is not correct because the southern hemisphere doesn't have a higher concetration of people than the northern hemisphere.

C is not correct because if that was the case the population density would have been the highest either on the Equator or the poles, and that is not the case at all.

D is not correct because the population density is related to the concept of agricultural production.

E is correct because the northern hemisphere has a higher concentration of population than the southern hemisphere, and this is largely due to the fact that there is much more land on the northern hemisphere, thus a much larger area where there are suitable conditions for living.

5 0
3 years ago
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