Iodine-131 has a half life of about 8 days. If you had 60 grams of I-131, how much would remain after 24 days?

b) mutualism

hope this : )

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

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.