13. An atom has a mass number of 12 and an atomic number of 7. How many neutrons does it contain?
A5
B. 7
C. 12
D. 19
[1 mark]

I want to know if I circled the right one

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation:

if you mean hydrogen and oxygen then water is the product

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?