Answer:
3.9 billion years
Explanation:
The half-life of potassium-40 is the time it takes for half of it to decay.
After one half-life, half of the original amount will remain.
After a second half-life, half of that amount will remain, and so on.
We can construct a table as follows:
We see that the mass will drop to 10 g after three half-lives.
1 half-life = 1.3 billion years
3 half-lives = 3.9 billion years
I think it’s up to them. But personally I don’t think it matters and I wouldn’t even be paying attention to that sorta thing.
Ik that u would do it from a ship, and i also know that they could send a diver down there or they could send the crane arm down there with a scoop from the ship and pull up some sand and use that as a sample
the term used to describe how well an organism functions in its environment is variation
