The answer is A, it is the scientists belief that there was a massive Colum of dust in the beginning. It formed to make the sun as its central mass and some of it aligned around the central mass of sun. And the gravitational pull of the mass kept the planets revolving around the sun.
atoms. What is the half-life of carbon-14?
O
A. 2,865 years
O
B. 50 years
O
C. 5,730 years
O
D. 7 years
SUENIT
A carbon-14 sample starts with 100 atoms, and 5,730 years later, there are 50 atoms the half-life of carbon-14 are 5,730 years
The chemical element carbon has the atomic number six and the letter C assigned to it. It has a tetravalent atom, which means that four of its electrons can be used to create covalent chemical bonds. It is nonmetallic. The periodic table's group 14 includes it. The crust of the Earth contains 0.025 percent carbon.
Similar to hydrogen, oxygen, lead, and all the other chemical elements listed in the periodic table, carbon is an element. An extremely common element is carbon. As in diamonds and graphite, it can exist in pure or almost pure forms, but it can also interact with other elements to form molecules.
The half-life of carbon-14's degradation into nitrogen-14 is 5730 years, making it an unstable element. The time it takes for half of the Carbon-14 atoms to decay back into Nitrogen-14 is therefore 5730 years.
Therefore, Thus option (c) is correct.
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Answer: C
Explanation:
What are clouds made of?
B) Plant roots weather pieces of rock
C) Plants add organic material to the soil.
D) Bedrock weathers and rock breaks up into soil particles