Theoretically it is the Chargaff's rule which entails that the ratio of purines and pyrimidines are 1. So following that rule you can solve this question.
G (purine) = C (pyrimidine) and
A (purine) = T (pyrimidine)
So G + C would be 28% and hence
A +C would be 72% i.e. 36% each.
Please note that their are certain modified bases besides these four are also there including methyl Cytosine, Methylated Adenine. But htese modification does not violate the Chargaff's rule and they follow standard Watson Crick base pairing.
This design makes it easier for cars to move up the hill because its moving more so it makes it easier to get up the hill
Explanation:
a) Tooth decay occurs when foods containing carbohydrates (sugars and starches), such as breads, cereals, milk, soda, fruits, cakes, or candy are left on the teeth. Bacteria that live in the mouth digest these foods, turning them into acids. Which damages the enamel and then damages the dentine towards the nerve ends.
b.)
1. Brush your teeth at least twice a day with a fluoride-containing toothpaste.
2. Clean between your teeth daily with dental floss or interdental cleaners.
3. Rinse daily with a fluoride-containing mouthwash.
4. Eat nutritious and balanced meals and limit snacks. Avoid carbohydrates such as candy, pretzels and chips, which can remain on the tooth surface.
5. After sticky foods are eaten, brush your teeth soon afterwards
6. Check with your dentist about use of supplemental fluoride, which strengthens your teeth.