Answer:
In Geology rocks that are older are usually the oldest near the bottom
Explanation:
Answer:
c. 2
Explanation:
Given that
Parent to daughter ratio = 1:3
Based on the above information, after considering the 1 half-life of radioactive isotope there is one-half of the real radioactive atoms of the parent left also the equivalent number of daughter atoms produced
Therefore after one half, the ratio between parent and daughter atom is 1:1
Now after the second half, half of the left parent atom would be transformed into the daughter cells
This remains a quarter of parent atom and 3 quarter of daughter atoms
So, the ratio of 1:3 would be shown after 2 half-lives
Orion the hunter is known for Rigel and Betelgeuse navigational stars.
Two of the ten brightest stars in the sky are located in Orion — Rigel (Beta Orionis) and Betelgeuse (Alpha Orionis).
<h3>What is
Rigel and Betelgeuse ?</h3>
Rigel and Betelgeuse are counted in the brightest stars of the galaxy. They form a pair in the Orion .
The Rigel star is situated near the Equator. This star is invisible in the region around and above of latitude 82°N and can be seen from any part of the world. It is a blue white giant star. This makes Rigel helpful in navigation.
Betelgeuse is a red giant star which is visible from eye. It has the same diameter as that of Jupiter.
Learn more about Rigel and Betelgeuse on:
brainly.com/question/3520949
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answer:
- 42 feet
work:
since she is going down, subtract.
-30 - 12 = - 42
hope this helps! :D
