I believe the answer is 2: multiple ecosystems in a biome
Be sessile (move from place to place very slowly, or not move at all)
Solar, because they have mostly sunny days and very few clouds!
One is to involve exercising curiosity in order to ask questions and seek answers about the universe.
Answer: Purine
Explanation:
A purine is a nitrogenous base found in nucleic acids, and contains a 6-membered pyrimidine ring fused to the 5-membered imidazole ring. The most common examples of purine bases are adenine and guanine.
Thus, the nitrogen base pictured is adenine, and the nucleotide considered is a purine
