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:
![_{19}^{40}\textrm{K}\rightarrow _{18}^{40}\textrm{Ar}+_{0}^1e](https://tex.z-dn.net/?f=_%7B19%7D%5E%7B40%7D%5Ctextrm%7BK%7D%5Crightarrow%20_%7B18%7D%5E%7B40%7D%5Ctextrm%7BAr%7D%2B_%7B0%7D%5E1e)
Answer:
All of these examples show evidence for evolution because they show change over time and descent from a common ancestor
Answer:
B. Chromosomes
Explanation:
This process is required to produce egg and sperm cells.
heart
...................................................................