Iv answered this questions already and you forgot to add the options lol but the answer is D by the way lol XD
Answer:
Option C. 2 half lives.
Explanation:
The following data were obtained from the question:
Original amount (N₀) = 1000 atoms
Amount remaining (N) = 250 atoms
Number of half-lives (n) =?
Half-life is defined as the time taken for the substance to reduce to half its original side. Mathematically, it can be obtained as follow:
N = 1/2ⁿ × N₀
N is the amount remaining.
n is the number of half-lives.
N₀ is the original amount.
Using the above formula, we can obtain the number of half-lives as follow:
Original amount (N₀) = 1000 atoms
Amount remaining (N) = 250 atoms
Number of half-lives (n) =?
N = 1/2ⁿ × N₀
250 = 1/2ⁿ × 1000
Cross multiply
250 × 2ⁿ = 1000
Divide both side by 250
2ⁿ = 1000/250
2ⁿ = 4
Express 4 in index form
2ⁿ = 2²
n = 2
Therefore, it will take two (2) half lives for the amount to get to 250 atoms.
Answer:
the climate was probably to dry for farming
Explanation:
let me know if right if it was
pls give brainlest
aslo there was a map but i didnt see it so hope it was right?
10. Excluding the radiation that is reflected and scattered back to space, does Earth's atmosphere
transmit or absorb most incoming solar radiation?
A. Transmits
B. Absorbs
Living in the desert is the answer, because the location does not cause conflicts (unless you count borders, which I’ll bring up why).
Here are why the other reasons are right:
Oil has caused many conflicts within the Middle East, because it is a valuable resource and can enrich a nation. One example of this is the Iraqi invasion of Kuwait. Part of it was oil related, which disproves tu is as an answer.
Borders also have caused conflicts. Because of the colonialism within Africa and the Middle East, it has caused many disputes about borders. Not an example of former colonialism, but the Iraqi-Iran war involved the border (and Iraqi nationalism), which makes this an incorrect answer.
Arab Spring is a major example of conflict, since it has caused many demonstrations within Arab nations against government authoritarianism/oppression, and has even caused civil war to occur.
Finally, religion has caused many conflicts. One big example of this is the Israel-Arab wars, and conflicts between the Shia government of Iran and the Sunni government of Saudi Arabia (not wars, but foreign relations and involvement in proxy wars)
Hope this helps!
