I’m pretty sure it’s C. But you can always look on google for you answers
Displacement reactions are useful for thermite welding, steel making, extraction of metals and relief from acid indigestion.
The definition for half life is true. Gamma rays are the most harmful nuclear decay. The amount of nitrogen left would be 18.75.
Why were there so many heated debates around the development of the cell theory? There were no concrete information about the development of the cell, thus they did not have the evidence to come to conclusions. People would argue about what theory was correct. who named the cell?