It would be A. True. I hope this helped you. Have a good afternoon
Answer:the decline of lichens is an important indicator of an imbalance in the ecosystem. this research can help system ecologists predict how pollution will affect the entire ecosystem
Explanation:
The two DNA<span> strands are known as polynucleotides since they are </span>composed<span> of simpler units called nucleotides. Each nucleotide is </span>composed<span> of a nitrogen-containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a sugar called deoxyribose and a phosphate group.</span>
