These are called sunspots, and appear regularly. They are cooler than the rest of the Sun's surface because of the extremely strong magnetic fields inside of them.
<u>Answer</u>:
"phosphate, ribose, adenine" could be a DNA nucleotide
<u>Explanation</u>:
They are built up of the molecules known as nucleotide. Every nucleotide has a sugar group ,a nitrogen base and a phosphate group in it. For such type of nitrogen are present. The order of bases are determined by the genetic code or the instruction they are carrying with them. The DNA are generally found in the nucleus present in the brain. It has the total control of the body. It also keeps a record of the genetic information.
What ever letter it is will be like this: Aa or Xx. One upper and one lower
