Answer:
bases.
Explanation:
Nucleotides are the basic building blocks that make up DNA, consisting of a deoxyribose sugar, phosphate group, and nitrogenous base. The main difference between the four nucleotides is the nitrogenous base, Adenine, Thymine, Guanine, or Cytosine. Adenine pairs with Thymine, and Guanine pairs with Cytosine. The order in which these pairs come in code for proteins and hold genetic information.
Answer: Frameshift mutation
Explanation: Frameshift mutation arise from the addition or deletion of nucleotides from a particular DNA fragment.
The communities plus abiotic and biotic surroundings is called an ecosystem
The answer is, "B", "Developing country".