Annelids have neither an external or an internal shell. Examples of annelids are
earthworms and leeches.
Answer:
The basic repeating unit of nucleic acids are known as nucleotides. A nucleotide consists of three distinct chemical groups, a 5-carbon sugar (ribose or deoxyribose), a nitrogen-rich base - (cytosine (C), guanine (G), adenine (A), thymine (T) in DNA or uracil (U) instead of T (in RNA), and phosphate.
NASA did not invent the smoke detector.
Answer:
Fresh Water
Explanation:
Salty water is the most abundant