The answer for that would be C. this is because it is the only one where a base of the DNA was deleted. A. added another base to it, B. was exactly the same, and D. was a mutation of the DNA because it changed one part of it
Therefore, the answer is C
Hope this helped! :D
Conservation of mass. The mass that reacts must equal the mass of the products.
The correct answer is option 2. Chlorine gas molecules are held together by strong covalent bonds. This type of bond requires an ample amount of energy in order to break it and turn gas into liquid. That is why, high pressure and low temperature is needed.
The answer is C) catalyst speed up reactions and activation energy
