Answer:
17,190 years
Explanation:
Each isotope has a characteristic half-life, which is the time required for half of that isotope to decay. After one half-life has elapsed, 50% of the isotope has decayed and 50% remains. After two half-lives, 75% has decayed and 25% remains. After three half-lives, 87.5% has decayed and 12.5% remains. For carbon-14, which has a half-life of 5,730 years, three half-lives corresponds to 17,190 years.
Answer:
i'd say that Sub-Saharan Africa is really poor, and whilst there are people whom are trying to help them, there just isn't enough people willing to contribute to helping the Africans
Explanation:
Answer:
The answer is 9.2 because by measuring the hypotenuse of the points you can accurately measure the angle.
Explanation:
Find points. Measure across.
Answer:
1.mesosphere is a coldest atmospheric layer surrounfing the earth
2.it become cloud enough to freeze water vapour
3.the ice cloud are blue white are caled noctilucent
Explanation:
The sun because it provides us energy
