You are on an archeological dig with a research team from the local university. the team unearths some pieces of an ancient wooden boat. when a sample of the wood is analyzed for carbon-14, scientists determine that 12.5% (or1/8) of the original amount of c-14 remains. if the half-life of c-14 is 5,730 years, how old is the wood from the boat?

The wood from boat is 17190 years old

Explanation:

For first order radioactive decay-

where N is remaining amount of radioactive elements after "t" time, is initial amount of radioactive element and is half-life of radioactive element

Here is 0.125, is 5730 years

Plug-in all the values in the above equation-

    or,   t = 17190

so t is 17190 years or wood from boat is 17190 years old

am i too late?

explanation:

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.