Answer:
true!!
Explanation:
A frameshift is when the frames of the three nucleotides shift and an insertion or deletion will do that
D) Vaccines work to fight the disease
Mark with crown!
Answer: Potassium-40 decays into argon gas over time.
Explanation: Potassium-argon dating is a dating method used to determine the age of sedimentary rocks by comparing the proportion of K-40 to Ar-40 in a sample of rock, and knowing the decay rate of K-40.
Potassium-40 undergoes decay following first order kinetics as given below:

Answer: decide if the trait is helpful for the organism
observe the traits of the organism's children
Explanation:
I think those are the 2