Thymine and cytosine are classified as "Pyrimidines" and have one ring of carbon and nitrogen atoms for each base.
I think it’s A. hope this helps
Yes it is an example of friction.Also a sled sliding across the snow or ice
By electric power station, where charcoal is used to produce electric energy.
Since due to having the coronavirus, the immune system is already tired of fighting off such a tough disease. Since it's so weak, one small bacteria can make your body react to it in ways you wouldn't think it may, because the immune system isn't working much.
