Look up Dawrin's theory of evolution. Basically, fossil records show how life forms change over time through evolution.
Answer: a (weak) acid
Explanation: the solutions are mostly neutral but the pH shown by the indicator as a bright blue means it is slightly acidic meaning the pH is between 6 and 7.6
It’s usually changes it into marble!!
The first option for 1 and the second option for 2
Radiometric dating is a kind of technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.
