The united states is going to see a big population growth compared to japan and other countries because alot of immigration is happening both legally and illegally to the united states and will see a population surge of more than 5 billion population growth within 2 years
(A) A and B are the two letters that represent gulfs.
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What are gulfs?</h3>
- A gulf is a large inlet from the ocean into the continent, usually having a narrower opening than a bay, however, this is not always the case in all geographical places thus named.
- The term gulf was traditionally applied to huge, indented areas of saline water surrounded by a coastline.
- Many gulfs, including the Persian Gulf, Gulf of Mexico, Gulf of Finland, and the Gulf of Aden, are important shipping lanes.
- The United States Gulf Coast, often known as the Gulf South, is the coastline that runs along the southern United States where it meets the Gulf of Mexico.
Therefore, (A) A and B are the two letters that represent gulfs.
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Complete question:
Each of the letters on the map above marks a body of water in Southeast Asia. Which two letters represent gulfs?
A. A and B
B. B and C
C. C and D
D. A and C
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!!!
Answer:
Its D: was divided into seeral smaller new nations
Explanation:
i just took the test on edge 2021
Depending on the type of storm, warm and stationary fronts are more associated with rain fog and snow, cold fronts are more associated with lightning and tornadoes
