Answer: Birmingham has evolved from a minuscule 7th century Anglo Saxon hamlet that was located on the edge of the Forest of Arden on the Fringe of early Mercia to a major city in 2020. This has happened by a combination of immigration, civic pride, and innovation. In total, Birmingham has seen 1400 years of growth.
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Explanation:
More than 75 percent
Explanation:
Let us carefully analyze this problem:
The half life of the rubidium isotope = 50 billion years
The half-life of a radioactive isotope is the time it takes for it to decay to half of its original amount.
Every 50years, we know that a rubidium isotope would split into half.
Initially when the isotope was formed, we would only have the parent atoms there. There wont be any daughter;
ratio of parent to daughter = 100 : 0
When the isotope decays to half; we would have equal number of parent and daughter:
ratio of parent to daughter at half life = 50 : 50
The age of the earth is about 4.6billion years;
this is;
x 100 = 9.2% of the half-life of the rubidium isotope.
At this time, we should know that only 9.2 percent of the daughter would have been formed.
The remaining parent would be 100 - 9.2 = 90.8% would still be left undecayed.
The ratio of parent to daughter = 90.8 : 9.2
This is more than 75% of the parent
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Radioactive decay brainly.com/question/10125168
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Answer:
All of the countries in South America are greatly affected by poverty to some extent. From 1999 to 2010, poverty dropped from 43.8% to 31.8%. As of October 2019, the countries that have the highest rates of poverty per population in South America are Suriname, Bolivia, Guyana, and Venezuela. All of these countries are trying to reduce poverty, with varying degrees of effort and success. However, in recent years most South American countries have experienced political shifts. This has led to improvements in some countries. In general most South American economies have taken action I.E. stronger economic regulations, foreign direct investments and implementation of micro- economic policies to reduce poverty and improve the life quality of the people.
Explanation:
I guess no because every where in earth there are different geologic column
