Answer:
The Trees changed color due to the pollution caused by the industries,it was not natural.When the white moths started standing out of the dark color of the trees they were eaten while the darker moths were saved and eventually all the white moths went extinct and the darker moths made more of their own kind
Explanation:
Answer: Radon
Explanation: Radium is a decay product of Uranium. As Radium is still highly radioactive it further decays into Radon.
Hope I helped :)
Purines have 2 rings pyrimidines have 1 ring.
