answer gradualism Explanation: gradualism refers to the type of evolution that takes a long time
Climate: is the long-term average of weather, typically averaged over a period of 30 years. D is the answer
Answer:
Explanation:
Nucleotides are building blocks of nucleic acids (DNA and RNA). A nucleic acid contains a chain of nucleotides linked together with covalent bonds to form a sugar-phosphate backbone with protruding nitrogenous bases. For example, DNA contains two such chains spiraling round each other in the famous double helix shape.