Answer:Greece is a peninsular and mountainous country located in Southern-Eastern Europe, in the Balkans peninsula, and has a land area of 128,900 km2 (49,769 sq. miles). The country has the largest coastline in Europe (13,676km) due to its numerous islands.
Explanation:
The correct answer of the given question above would be the second option, option 2. The statement that does not describe settlement patterns is that, settlement patterns are rarely politically or economically influenced. This is not true about settlement patterns. Hope this answer helps.
нєℓѕιикι (fιиℓαи∂) ιѕ тнє ¢ιту ιи α ¢συитяу вєтωєєи ѕωє∂єи αи∂ яυѕѕια.
нσρє ι ¢συℓ∂ нєℓρ уσυ
Answer:
After three half-lives, it is 7:1
Explanation:
- The rate at which the decay of the radioactive isotope is said to be half-life and is represented as the half-life of the atoms and the matter to disintegrate itself.
- The two radioactive isotopes are K 40 and Ar 40. After the K-Ar dating, they contain minerals such as the clay mica and the temphra minerals and Half-life of the K 40 is 1.3 more than 100,000 years i.e 10x9 years for Ar 40.
- <u>Thus the K 40 has to divide as three half-lives have passed if the ratio of argon to potassium atoms is 7:1. At the end of one half-life, the ratio of the number of argon to potassium atoms is 1:1. and two half lives its 3:1 thus after the third half-life it becomes as 7:1.</u>
