Answer: sexual reproduction results to the offspring having a mix of genetic characteristics of the parents. Where as Asexual offspring tend to look like their parent.
Explanation:
Intercourse leads to the mixing of genetic material. Asexual reproduction is often the parent making a separate copy of themselves.
Given the population of city = 150,000 people
Volume of water consumed by each person = 660.0 L
Total volume consumed in the city every year = *=/year
The required fluoride concentration is 1.0 ppm
1.0 ppm means 1.0 mg fluoride per liter of water
Calculating the mass of NaF that must be added in kg:
=
I think it is Molar masses of compounds involved or Oxidation numbers, but you can choose one of them. Or you can think about the question carefully.